Investigation Discovery

Peter Theriault has not missed a day of work in almost 30 years. So, when he fails to arrive for his shift at a car plant, friends and family immediately suspect something is very wrong.

Andie Nash is devastated when the man she has been dating, Simon Reid, vanishes mysteriously and she starts to get suspicious.

Tyrannised by his father and traumatised by his sexually abusive scout master Heath takes a gun to his family; will more violence follow this massacre?

Tempers flare outside a home where Savannah police officers discover three bodies; one argument may offer a vital lead in the case.

In 2001, a man's visit home turns into a desperate search for his missing father.

Debra Davis never suspects her husband's perversions are signs of something evil deep inside him.

Former basketball star Rico Harris mysteriously vanishes while driving to Seattle. Investigators start a journey that becomes more baffling as time passes.

The Tennessee Wraith Chasers travel to the heart of Ohio to investigate the most haunted prison in America - Mansfield Reformatory.

One family in a small town in the Pacific Northwest seems to have it all, until a secret video and a stash of guns reveals the face of a diabolical killer.

A hooded gunman shoots and kills Donna Willard while her son watches from the top of the stairs.

The crew visits King Gillette Ranch, a sprawling compound built on sacred land.

Fourteen-year-old Peter suffers from a psychotic breakdown after a family member dies. A family secret forces Mary into an unthinkable situation.

An armed suspect fires at police; a man locks himself in a garage that catches fire.

Can police find the vicious killer of two separate Jane Doe victims, murdered in a shockingly similar way?