When two young women are brutally murdered in Phoenix, friends and family wait decades for answers. When advancements in DNA reinvigorate the case, police discover their killer has been hiding in plain sight.

The unaired pilot that analyzes the investigation into the gruesome murder of an esteemed Southern doctor. An anonymous tip leads police to uncover a pattern of lust, greed and a complex dynamic between twin sisters.

Updates to an episode with new details and interviews. The son of a wealthy psychologist finds his father murdered and points the finger at his mother. Investigators delve into the marriage, revealing darkness hidden behind a façade.

Missouri police are called to the home of a prominent judge’s daughter to find her husband dead on the couch. While the crime scene suggests a break-in, investigators uncover evidence of a scandalous murder plot driven by greed.

When a beloved Florida mother is found brutally shot to death and her newborn missing, investigators race against the clock to track down a mysterious visitor whose motives prove sinister.

Serenity in the Montana mountains is shattered when a man is shot to death on his neighbor’s land. Detectives learn of an escalating dispute over trail access and reenact the shooting to discover if claims of self-defense match the evidence.

A feud between neighbors in the quiet suburb of New Brighton, Minn., turns deadly when one man’s passion for local wildlife drives his neighbor to snap. Investigators must determine whether the shooter acted out of self-defense or bitter revenge.

When an eight-year feud between neighbors in Santa Clarita, Calif., ends in a violent confrontation that leaves one man dead, detectives investigate if the shooting was a tragic case of mistaken identity or a calculated murder plot.

A beloved pastor is fatally shot in his sleep by a mysterious intruder; investigators uncover a scandalous lifestyle and sordid family secrets that sends shock waves through a small Oklahoma community.

When a young mother goes missing in rural Ohio, it's a race against time to uncover the truth behind her disappearance; as evidence begins pointing to foul play, investigators fear she may have been the victim of a toxic family dynamic.

After a hardworking family man is gunned down in his driveway, a domestic dispute leads investigators to an unlikely culprit – and unravels a history of violence, lies and betrayal.

A look at the mindset of scorned woman Tonya Ford, who killed her police officer husband, David, when she discovered he was leaving her for another woman.

When a collector of racecar memorabilia is found shot in broad daylight in Scott County, Ind., with no eyewitnesses, detectives follow the evidence to reveal the true mastermind behind this twisted murder plot.

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A 15-year-old missing persons case is reinstated when an anonymous tipster leads police to unearth a grisly murder. As witnesses come forward, North Carolina investigators must try to piece together the crime and bring the killer to justice.

A hardworking family man is shot to death in front of his wife during a morning walk with their dog. As police determine if the attack was random or targeted, they uncover a web of deceit spanning across state lines.

When a young Missouri couple are found shot to death on their front porch, the victims’ past quickly reveals several suspects close to home. Investigators press for a confession from one of the co-conspirators to expose a master manipulator.

A beloved mother is fatally shot on her Florida doorstep by someone disguised as a clown. Due to the mysteriously dressed culprit, decades pass before investigators can utilize advancing technology to reveal the killer and salacious motive.

At a VA hospital in West Virginia a string of severe hypoglycemic events results in the deaths of several patients. After an investigation ensues, a deadly pattern reveals the work of a serial killer lurking within the halls of the hospital.