TV Guide Investigation Discovery Wednesday

A dad learns his son is behind three murders across Oregon and California. Ken makes the agonizing choice to call authorities and turn in his own son.

A teenager wakes up to a nightmare after a late night 911 call reveals a shocking crime inside his home. Investigators confront a rare claim.

Margie Bult thinks her second husband resembles a fugitive named Paul Steven Mack, so she vows to uncover the truth no matter the risk to herself.

After 9 years of marriage, Terry Patzer can't explain how her former lover, Russell Tillis, became so twisted, but she was right to be afraid of him all along.

A town council member's murder appears to be committed by a professional killer when a single bullet is the only evidence uncovered that caused her death.

Residents in the small town of Grand Ledge, Mich., are shocked when a retired police officer and his wife are found brutally murdered inside of their home.

When 78-year-old George Volz is found tied up and badly beaten in his Philadelphia home by his family, the police turn to the neighborhood for help.

A 5-year-old girl witnessed the murder of her adoptive family by a hitman and her description of the killer leads detectives deep into the criminal underworld.

When a disc jockey is found bludgeoned to death outside his radio station, police quickly learn that he was not just a random victim of violence.

When the body of Asia Adams is discovered after a fire in Germantown, Pa., the police are unsure if her death was an accident or arson.

John Peek's first wife died in an apparent burglary, then his second wife is killed years later, and now the police must determine if it's just a coincidence.

A distraught husband cannot locate his wife, but police discover a videotape, and the grainy footage points to a grisly demise.

Newlyweds Tony Cooper and Melinda Kotkins of Gresham, Oregon, are murdered; jail calls during Tony's previous incarceration yield many suspects.

William Hargrove loves both Anna and Michelle, but when Anna winds up dead, his phone calls hint at Michelle's possible role in Anna's murder.

When Ty Underwood is found dead in her car in Tyler, Texas, police begin to investigate the murder as a possible hate crime and track down the killer.

When a 16-year-old girl is found stabbed to death in New Jersey, police investigate her relationship with a 20-year-old and expose an abusive relationship.

82-year-old Agnes Bram of Middleton, Wis., is found murdered in her garage, as detectives develop their case, a city-wide manhunt follows.

When a hooded murderer guns down math teacher Ryne Zahner after a night of partying, the entire Arizona community struggles to grasp his murder.

Musician Delvin "Buckii" Meadows dies after a severe gunshot wound, but as police begin their investigation, they fear they might never solve the case.

When the body of food service worker Karen Simek is found with a gunshot outside her office at a food center in Milwaukee, it sparks a year-long investigation.

A missing person report spirals into a homicide investigation when key belongings remain behind. Doubts leave a family wondering if every truth surfaced.

Over 2 years, a killer shoots multiple people dead in Philadelphia, but the killer's identity and motive remain unclear. The FBI uncover a real-life John Wick.

In September 2019, Erica Thompson vanishes. Her phone pings across state lines, someone else has her car, and someone erases her home's security footage.

In November 2019, Sheena Gibbs travels back to Chicago from Muscatine, Iowa, after caring for her mother, but she is never seen or heard from again.

Over 2 years, a killer shoots multiple people dead in Philadelphia, but the killer's identity and motive remain unclear. The FBI uncover a real-life John Wick.

In September 2019, Erica Thompson vanishes. Her phone pings across state lines, someone else has her car, and someone erases her home's security footage.

In November 2019, Sheena Gibbs travels back to Chicago from Muscatine, Iowa, after caring for her mother, but she is never seen or heard from again.

A missing person report spirals into a homicide investigation when key belongings remain behind. Doubts leave a family wondering if every truth surfaced.

An optometrist family's lifestyle turns into a disaster when the extremities of the established family's pursuit to obtain whatever they desire are revealed.

A small-town cashier disappears after her stepbrother and stepbrothers move in, leading police to investigate for answers to the woman's whereabouts.