Dr. Phil sits down with Gary Giordano, who was considered the prime suspect in the disappearance of traveling companion Robyn Gardner in 2011 Aruba, and offers him a polygraph test.

Dr. Phil sits down with David and Cindy Barajas weeks after David was acquitted of murder charges in the shooting death of the drunken driver who killed their two young sons.

Dr. Phil sits down with Stephanie Hayden, daughter of Will Hayden ("Sons of Guns"), who has been accused of raping a 12-year-old girl, and continues his interview with the father acquitted of murder charges in a drunken driver's death.

A mother and her former live-in nanny come face to face on Dr. Phil's stage after the nanny refuses to leave the family's home.

Issy Stapleton's mother discusses her attempt to kill herself and Issy.

Issy Stapleton's mother discusses her attempt to kill herself and Issy; warning signs; how viewers can help Issy secure a healthy and productive future.

Sisters say their mother is leading a secret sex life while maintaining the facade of a happy marriage; she says they are stirring up drama with half-truths and misinformation and need to butt out.

Retired NFL player Chris Johnson discusses domestic violence and former teammate Ray Rice; Trichele says she shot and killed her husband in self-defense after years of domestic abuse.

Monica says her 13-year-old daughter is angry, violent and out-of-control; the girl says her mother is abusive and has kept her away from her father; Robin McGraw makes an announcement.

Renee videotapes her husband abusing her, sending him to jail.

Renee records her husband's abuse of her, sending him to jail; updates on memorable guests.

Jaime says she divorced her husband because he is abusive; he says she pushes his buttons until he blows up; they are considering reuniting for the sake of their child.

Actress Kelly Rutherford's children were ordered to live with their father in France; a 12-year-old has Tourette's syndrome.

Jean says her 17-year-old daughter was the all-American girl until she began dating a 28-year-old divorced father; a look at the man's history.

A woman needs help controlling her 7-year-old son.

A couple who got married after only eight weeks of knowing each other try to solve their marital problems.

A 70-year-old woman wants to move to Ghana to be with her online fiance -- even though they have never met.

Parents try to figure out why their teen daughter has daily, violent breakdowns.

Two women wonder if their mother really has multiple personalities -- or if she is just excusing her alcohol-induced bad behavior.

Trisha and Danielle say they are convinced that the heiress their father met online is really a "catfish."

Sharon and Robert say their 25-year-old son is so violent and explosive that they are afraid he might follow through with his repeated threats and kill someone.

A couple say they are being terrorized by an online hate group, led by a disgruntled former employee, after they closed their business.

A teen says she got pregnant on purpose so her family would have to accept her abusive 30-year-old ex-con boyfriend.

Lisa says her half-sister's web of deceit includes forging checks and lying about the deaths of her father and brother.

Dana, who has struggled with drugs in the past, is furious that her sister refuses to relinquish temporary guardianship of Dana's teen daughte

Parents say their 24-year-old son has extreme anger issues and threatens to kill them; he says they disrespect and antagonize him.

Professional locator Troy Dunn reunites Dottie with two of her three children who she says were abducted by their father four decades ago.

Megan says her father raped her while she was unconscious after a night of partying; both agree to take polygraph tests.

A couple say they are fed up with their adult son, who is lazy, unmotivated and still living at home on their dime; he says he wants to live on his own, but his part-time, minimum-wage job does not allow it.

Beth says her live-in boyfriend is a liar, cheater, alcoholic and narcissist who verbally abuses her daily, and she worries about the toll it is taking on their many children.

Canda says she has been cyberstalked and bullied for three years by a woman she has never met.

Despite maintaining his innocence, Jack McCullough, once known as John Tessier, is convicted of the 1957 murder of 7-year-old Maria Ridulph.

Young Matthew Scheidt is convicted of impersonating a physician assistant and practicing medicine without a license, and later is accused of impersonating a police officer.

A quarreling couple come back to the show, their relationship worse than ever.

Viral-video star "Homeless Joe" survives on the streets of Manhattan by panhandling and picking up women.

Fifteen-year-old Emily's mother says she uses drugs and causes constant chaos, and her stepfather would prefer that she move out.

After teen Andrue attempted to take his own life, his three younger siblings were removed from their parents' care based on his testimony of abuse; the parents, now separated, point fingers at each other.

Kaitlyn's professional-fighter husband speaks out from behind bars after being accused of assaulting her on two separate occasions over one weekend; she says she will not divorce him and blames her mother for meddling.

Millionaire socialite Gigi Jordan admits to killing her 8-year-old son but says that she did it to protect him.

The shooting death of a young mother divides her family after authorities conclude she took her own life.

Parents enable three 20-something women who are all hooked on heroin; Dr. Phil offers the sisters help, with one big, non-negotiable condition.

A young man's parents and girlfriend blame each other for his accidental overdose death.

A woman and her daughter defend their lifestyle of dating wealthy, married men for money; a sugar baby confesses to her fiance; reality TV star Kendra Wilkinson.

Nikki says her husband, and the father of her two young children, has become abusive; he says she may be trying to kill him.

Shemida says she has been diagnosed with more than 70 health conditions, but her family members say she is fabricating some of them.

Family members say Shemida's 70-plus diagnoses are tearing their family apart.

Four siblings say their mother has blacklisted them from the family and will not allow them to see their father, who is dying of bone cancer.

The family of Todd Herzog ("Survivor: China") say he has fallen off the wagon and must return to the show for another alcohol-addiction intervention.

Dr. Phil continues his efforts to get Todd Herzog ("Survivor: China") the lifesaving treatment he needs; an update on "Homeless Joe," who was offered help for his alcoholism on an earlier show; former Ariel Castro captive Michelle Knight.

June "Mama June" Shannon, mother of 9-year-old reality TV star Alana "Honey Boo Boo" Thompson, discusses rumors that she is dating a convicted sex offender.

The stepmother of a severely malnourished 5-year-old who was found locked in a small closet in his home says she had no idea what was happening to him; Honey Boo Boo's Uncle Poodle tells why he says Mama June is lying.

Rick says his ex-wife and ex-girlfriend have teamed up to ruin his life by keeping him away from his child; they say he is controlling and abusive, and they fear he is a danger.

Adult sisters confront their grandmother, who denies that her now-imprisoned husband molested them for many years.

Sisters' grandmother refuses to acknowledge that her husband sexually abused them; what parents need to know to keep their children safe.

Alcohol addict Kristine resorts to drinking hand sanitizer as a cheap way to get her fix and blames her dysfunctional family for her inability to stay sober.

Lindsay claims her father turned a blind eye to her sexual abuse by a cult leader from the ages of 13 to 23.

Melvin's wife and girlfriend meet for the first time, and he demands that Dr. Phil choose between them for him.

A grieving mother says a former friend is harassing her online; a woman's 15-year-old daughter killed herself after being cyberbullied by a man she had never met.

Dana says her 23-year-old daughter is a drug addict who has ripped apart their family; the young woman blames her mother for pushing her buttons.

Two friends pack on the pounds together; a woman says she does not deserve love or marriage unless she loses weight; a former fitness model hates what she looks like; Dr. Phil introduces a new weight-loss plan.

Andre says his sister preys on men with money and power, and he fears that her sexy, scheming ways may get her killed.

Teen Layton has run away from home more than 20 times in the last eight months and admits that she will do it again.

Teresa says her husband cheated on her and was abusive until he got help with his anger, and now she is full of rage and directs her anger at him, often in front of their children.

Fifteen-year-old Bella binges and purges 30 to 40 times a day, washes her hands obsessively, changes her clothes several times a day and holds her breath so she does not "catch calories."

Lauren says she was kidnapped, sold into sex slavery and witnessed a woman's murder, but the police do not believe her story.

Three women date men 20 to 30 years their junior.

Anna "Chickadee" Cardwell ("Here Comes Honey Boo Boo"), her grandmother and Uncle Poodle discuss Mama June Shannon's relationship with a pedophile.

Family members of Eric Garner, who died after being put in a chokehold by a police officer; the mother of Michael Brown, who was shot and killed by an officer in Ferguson, Mo.; NFL player Ben Watson; college students say they were racially profiled.

Young Natalie says her boyfriend has a violent anger problem and she fears for her life and that of their 10-month-old son.

A 32-year-old who still lives at home hates his father so much he wishes the man would die; his father says he is an entitled mooch who could never survive on his own; a professional trainer meets his long-lost son; Jackie Evancho performs.

A 17-year-old girl is sentenced to 23 years behind bars for luring a friend into the woods and killing her; Shemida, whose family accuses her of fabricating health problems for attention, returns to the show.

Jamie says his estranged wife verbally attacks their two children constantly, and the drama has gotten so bad that he got a protection order against her; Jennifer denies being abusive but confesses to a disturbing and dangerous behavior.

Women who have accused Bill Cosby of sexual assault tell their stories.

Former guest Andee says she completed 90 days of drug rehab, then relapsed and is now worse than ever.

Guests want to lose weight, but their loved ones are making it more difficult.

Dixie says her daughter has always been more interested in partying than in being a good mom, so her teenager is better off living with grandma.

A couple say their 9-year-old son terrorizes the family and may be dangerous; relatives say he is overmedicated and under-parented.

Ashley says her brother is addicted to sex, alcohol and pain pills, and he says his problems stem from his rocky childhood.

Teens record their wild behavior and post it online for the world to see; a 15-year-old becomes an Internet sensation for hitting another girl with a shovel; a man sets himself on fire in order to gain video views; an anti-bullying challenge.

Teen girl bullies and bully victims move in together at the Dr. Phil House.

Jessica says her weightlifter mother is lying about being sick with stage-three brain cancer to gain sympathy and attention.

Linda enables her 32-year-old son, who is addicted to prescription pills, has an expensive gambling problem and has spent time in prison for drug trafficking.

Jamie says his girlfriend was an abusive, irresponsible mother who left him and their five children more than two years ago to start a new life with a man she had known for only a few days, and has not seen them since.

Josie, 15, has been kicked out of school and is facing battery and runaway charges, and Dr. Phil has some tough questions for her mother.

Sarah says her parents will not stop meddling in her eight-year marriage; they say her husband is bad news.

Sarah's parents, who say her husband is bad news, come face to face with his parents for the first time since the wedding; a grandmother may be putting her grandchild at risk.

Young Michelle tells her family that she has been making a living by dating older men and being pampered with perks; an update on a past guest who revealed to her fiance that she was a sugar baby.

Dr. Phil sits down with the mothers of teen girl bullies and bully victims to find out if they really know what is going on in their daughters' lives; dealing with mean girls; how victims of bullying can take back their power.

Brian says his two teen daughters vanished while visiting their mother, and he thinks she is hiding the girls; their older sister says she believes they ran away to avoid Brian, who she says is controlling and abusive.

Tracy thinks her sister's boyfriend may have sexually abused her sister's two granddaughters, but the couple say the children's mother coached them to lie.

A video blogger sparks outcry by telling girls that if a man hits a woman it is a sign of love; Jessica admits she fabricated evidence against her ex-boyfriend.

Emmy-winning news reporter Christi's struggle with alcohol leaves her jobless, sleeping in bushes and estranged from her adult daughters, whom she faces for the first time in two years.

Parents say 16-year-old Kristi is angry and violent, refuses to go to school, smokes marijuana and has no respect for authority.

Penny confronts her father, who she thinks hired a hit man to kill her sister.

Steve has sent more than $100,000 to a woman to whom he believes he is married but has never met in person.

Lynn, 30, says she has numerous medical conditions, including cancer and heart disease, but her mother says it is all lies in order to gain money and attention.

Alyssa and Steve say their daughter had a promising future until she met a young man who led her down a dark and dangerous path.

Mike and Vicki say their 37-year-old son was once making millions of dollars running a successful real estate company, but now lives with them, on their dime; he blames them for his current living situation.

One of two former Vanderbilt University football players who were found guilty of raping an unconscious female classmate in a campus dorm room after a night of drinking tells his story.

Three 20-somethings say they have all been victims of cyberbullying at the hands of one young woman.

Women say their sister lives in a world of make-believe, and she once paid a homeless man to try to kill her, so they would think she was dead.

Three sisters say their mother's alcoholism is destroying their family; she says her husband has a drinking problem too.

A woman says her son has gone from working a well-paying job to homeless and living in the woods because of his fiancee.

Dr. Phil tries to unravel the truth about a toxic relationship between a professor and one of her students.

Whitney says her ex-boyfriend is an unfit father, and they are embroiled in a custody battle over their 4-year-old daughter.

Caroline and Sonny's tumultuous, possibly abusive marriage situation becomes worse after Sonny cheats on his wife with her sister.

Kimberly refuses to let her ex see their three children, saying he is unstable and irresponsible.

Jori publishes a novel she says is partly based on her life, including abuse she claims she suffered at the hands of her deceased mother.

Siblings say their mother chooses alcohol over them, and with their father headed to prison, they are afraid their family will fall apart if she does not get her act together.

A woman admits she has sent more than $1 million to her online boyfriend, whom she has never met in person; viewers join the effort to track down the man.

Dr. Phil speaks with Dalton Hayes, an 18-year-old man who, with a 13-year-old girl, went on a two-week, multi-state crime spree, stealing cars, destroying property and forging checks.

A young woman says her family treated her like an outcast during her childhood and turned their backs on her when she was 17; they deny rejecting her but say they do not agree with her controversial lifestyle.

A woman says that ever since her husband won $1.66 million in a lottery pool, he has become angry, distant and secretive.

George says his estranged wife is an unfit mother and a serial cheater who puts boyfriends ahead of her six children.

Ilene says her boyfriend is ruining their relationship with his jealousy and controlling behavior, and nothing she has done to prove her fidelity has eased his suspicions.

Kristen says her baby's adoptive parents promised she could remain in their child's life and then reneged; they say her unstable behavior is the problem, and she is pregnant again

Jen says her mother should apologize to her for decades of pain, drama and lies; the pair face each other for the first time in seven years.

Laura has a list of 91 fears and rituals, and her husband says her OCD is taking such a toll on their relationship and family that he is considering divorce.

Adoptive parents say 7-year-old Rylan has a fascination with knives, talks to an imaginary friend who tells him to kill his entire family, and has sent two teachers to the hospital.

Nick Gordon, boyfriend of Bobbi Kristina Brown, says he blames himself for not being able to save her or her mother, Whitney Houston; his mother says she fears for his life as he becomes increasingly self-destructive; Dr. Phil stages an intervention.

The parents and sister of Eddie Ray Routh, convicted of killing U.S. Navy SEAL Chris Kyle and friend Chad Littlefield, talk about his behavior.

A 9-second video of college students singing a racist chant sparks outrage; a KKK member's daughter has a biracial baby.

Ashley Summers, 14, disappears in 2007 Cleveland; Michelle Parker disappears the day she and her ex appear together on "The People's Court"; an update on former guest "Homeless Joe."

A young woman wants an apology from her mother for what she says were years of abuse; an update on former guests Candi and Lyndsey.

Melisa says her estranged husband is a pathological liar who lies about anything and everything; he insists he wants to change.

Rhonda says her 18-year-old daughter puts herself in harm's way by pursuing dangerous men; Vickey suspects that her violent ex may have had something to do with the disappearance of a pregnant woman; Robin surprises a shelter for women and children.

Kezia says her daughter has spiraled out of control since witnessing her best friend's murder and being wrongly accused of the crime

Sarah has spent years gathering evidence to try to prove that her husband has been unfaithful; the couple's teen son talks about how their behavior affects him and his brother.

A mother and daughter in conflict about the daughter's past drug use and efforts to reform seek assistance from Dr. Phil.

Nancy and Mark say their 18-year-old son, Chris, regularly steals from family, friends and neighbors, and Chris admits to it.

Gwen and Derrick say they would love to be together, if the other would change.

Diane says Carie was never there when she needed her daughter, and Carie says her mother blames her own financial woes on Carie.

A 17-year-old is haunted by three weeks spent as a sex slave while being held captive by an online friend.

Pregnant Melinda says her husband is a controlling and abusive drug-user and she worries about their 1-year-old son.

Thelma says her former daughter-in-law was a terrible wife and mother who abandoned her children but still takes money from their father.

Beth says she grew up in a "house of horrors" at the hands of her mother, who denies her accusations of abuse and neglect.

Angela says her nephew is in prison for murder because his wife lied under oath, and the women face each other for the first time since the trial; psychic medium John Edward gives Dr. Phil a personal reading and has a message for Angela.

Jennifer says her ex-husband calls her 100 times a week and sneaks into her house to go through her belongings; five siblings tell of their mother being beaten to death by her boyfriend; three sisters lost their mother to domestic violence.

Anthony says his 29-year-old brother has struggled for years with cocaine, alcohol and anger issues, and their parents give him money.

Model Jamie admits to struggling with drug and alcohol addiction, and has another serious problem that he refuses to discuss; a follow-up on the Nick Gordon intervention.

Michelle Knight, held captive by Ariel Castro for a decade; actors Taryn Manning and Raymond Cruz ("Cleveland Abduction"); Renatta says she has turned to food to cope with losing family members to addiction.

A small-town man is sentenced to 30 years in prison for murdering his wife's married lover; the wives come face to face for the first time since the trial.

Seven college students face the man with whom they fell in love online, but never met in person; he, too, says he was victimized, by a catfish who stole his identity; the real person who lured the young women into fake relationships comes forward.

Brenda and Josh say their baby was taken from them after she accidentally fell off Josh's lap, and he is now in prison.

Kim Richards ("The Real Housewives of Beverly Hills") discusses her ongoing battle with alcoholism and her April 2015 arrest.

Tensions run high as "master manipulator" Winston faces his estranged wife, former fiancee and ex-wife.

Kaye, 70, has sent more than $200,000 to her online boyfriend, whom she has never met in person; stepdaughter Kathy is angry that Kaye is wasting her late father's hard-earned money on a scammer.

Kaye, 70, has sent more than $200,000 to her online boyfriend, whom she has never met in person; Kathy is angry that Kaye is wasting her late father's hard-earned money on a scammer; the results of Dr. Phil's investigation into "Aaron."

Lisa accuses her father of tampering with his mother's will and stealing an inheritance she believes was intended to go to her and her sisters, and says he is throwing it away on a Russian mail-order bride.

Carl is boycotting his daughter Lisa's upcoming wedding because of an inheritance squabble and says he doubts he is her real father.

Two years after her 12-year-old daughter took her own life because of cyberbullying, Tricia says she is being harassed online by a stranger who shares the girl's name; the two women come face to face for the first time.

Betty says her young grandson's step-grandmother coached him to say that her husband touched him inappropriately.

Bill discusses pleading no contest to felony child abuse despite maintaining his innocence and hears the results of his polygraph test.

Jennifer says her parents fraudulently gained temporary custody of her 6-year-old and turned her young adult children against her; they say she is mentally ill and they had no choice but to intervene.

Jennifer fights her parents for custody of her 6-year-old; Dr. Phil reads the results of her drug test; her 20-year-old son tells his side of the story; a backstage showdown.

Nemeses Levi and Merlin ("Amish Mafia") feud over Levi's new book and exploitation of the Amish for fame and fortune.

Crystal and James say their on again/off again relationship is riddled with lies and accusations of abuse, neglect and bad parenting; Dr. Phil and fellow talk-show host Steve Harvey face off in a series of challenges.

Kathy, a former "Mother of the Year," stalks a young couple after they outbid her on a dream home, engaging in a yearlong campaign to annoy and embarrass them.

Friends and family raise thousands of dollars to help pay medical bills for Meaghan, 25, who tells them she has terminal cancer; more than a year later, she confesses that it was all a lie and pleads not guilty to charges of grand theft and fraud.

A former middle-school teacher tells of being charged with rape after police found her in a motel room with a 15-year-old former student, 650 miles from their hometown.

Shanesha tells of being charged with child abuse for leaving her two young sons alone in a hot car while she attended a job interview and responds to those who say she misused monetary donations from sympathetic supporters.

Teen Zachary Davis sits down with Dr. Phil to reveal disturbing details of the night he killed his mother with a sledgehammer and to discuss what drove him to do it.

Nick says he was drugged and a microchip implanted in his body, causing him to hear disturbing voices in his head telling him negative things and threatening his loved ones.

Alexandra says an older friend carries around a box filled with hundreds of pictures of her, calls her up to 100 times a day and once got physical because she dated another man.

Sarah says her 23-year-old son is so obsessed with playing video games that he dropped out of college, is unable to hold a job and has lost more than 50 pounds; the young man says he would rather live in a virtual world than the real world.

Amber had an affair with, then married, her sister's baby-daddy, and tensions run high as the sisters confront each other on Dr. Phil's stage; Megan's and Jenn's looks define who they are, but they are still not confident.

Shawna's ex-husband sues her for gross negligence due to the death of their 11-year-old son after she left him alone with her 16-year-old, who has confessed to killing him.

Kari tells how her husband reacted when she confronted him with evidence that he is a serial rapist. Other red flags she may have missed.

Actress Susan Sarandon fights to get Richard Glossip, who is scheduled to be executed in a few days, off death row.

Sisters Rylie and Lenae say their father was physically and verbally abusive during their childhood, and it caused one of them to develop an eating disorder and the other to develop borderline personality disorder.

Leslie says her ex-husband is a lying, abusive sociopath and has hidden a large sum of money to leave her destitute.

Interviews with two of the many women who accuse comic Bill Cosby of drugging and sexual assault.

Sherman says his wife spends $1,000 a month on kava and kratom teas, alcohol, Adderall, and vaping; she says he is controlling and verbally abusive, and he tricked her into signing their house over to him for $10.