Following her husband's sudden death, a Utah mother-of-three writes a book to help her children through their grief; when investigators learn the cause of death and dig deeper into their lives, she is charged with murder.

The investigation into the poisoning death of Wisconsin mother-of-two Julie Jensen takes a surprising turn when detectives learn that Julie wrote a letter just days before her death pointing to a possible suspect.

An investigation into the murders of several women found dead along Gilgo Beach in Long Island, N.Y.

After Tahereh Ghassemi disappears from the Louisiana home she shares with her adult son, detectives discover that she'd recently come into a great deal of money; the investigation reveals an astonishing plot with international implications.

When 17-year-old Alissa Turney is reported missing in Phoenix, it takes years before detectives treat her case as a homicide; a new investigation unearths dark family secrets.

While responding to a house fire in New Jersey, firefighters discover the burned remains of homeowner Rob Cantor in the basement, leading investigators to question what really happened: new interviews and legal developments about the latest twists and turns in the case.

A mother searches for answers in the unsolved murder of her 14-year-old daughter until new DNA technology changes everything.

When deadly gunfire erupts in an Austin, Texas, home in the middle of the night, detectives wonder if the homeowners' jewelry business is a possible motive; an investigation uncovers a suspect that no one saw coming.

Navy petty officer and devoted mother Sherri Malarik is found shot to death in her minivan after she disappeared. The case remains cold until new revelations and old memories resurface, dividing the Florida family.

A mystery looms over a small New York town when a woman is murdered and a stunning secret is exposed; more than a decade later, new developments lead to an unexpected conclusion.

Twenty-seven-year-old Egypt Covington is found murdered in her home; investigators in Michigan quickly identify a person of interest but years pass without an arrest.

A woman goes missing and investigators uncover her husband's chilling history including dark secrets about another missing wife.