Investigation Discovery

Detectives investigate a grandmother's death after a mysterious basement fire and discover the killer may be closer than anyone imagined.

Following a serial killer's military postings, Bonnie and Kara investigate murders in Maine, possible victims in San Diego, and chilling evidence in Virginia suggesting the serial killer's crimes stretched far beyond those officially known.

Days before Christmas, a suspected home invasion stuns a quiet Connecticut neighborhood, leaving a mother of two dead in the basement and her husband badly injured; investigators soon discover that this case may not be what it first appears.

The police in Newnan, Ga., respond to six murders in three days; as investigators try to piece together the motive behind the killings, several witnesses claim to know the culprit, but a rush to judgment could result in a killer going free.

Detectives investigate a grandmother's death after a mysterious basement fire and discover the killer may be closer than anyone imagined.

The key to solving homicides lies somewhere within the final 24 hours of the victim's life.

The key to solving homicides lies somewhere within the final 24 hours of the victim's life.

The key to solving homicides lies somewhere within the final 24 hours of the victim's life.

The key to solving homicides lies somewhere within the final 24 hours of the victim's life.

The key to solving homicides lies somewhere within the final 24 hours of the victim's life.

The key to solving homicides lies somewhere within the final 24 hours of the victim's life.

The key to solving homicides lies somewhere within the final 24 hours of the victim's life.

A man's torso is discovered in the desert; police believe he was shot prior to being frozen and dismembered and question his wife.

A Wisconsin man from an upscale village poisons his wife with antifreeze so he can marry his mistress.

A man discovers his pregnant wife dead; investigators unearth a series of affairs and an insidious murder.

A wealthy homebuilder has an affair with one of his clients but when the news comes out, a brutal murder ensues and a search is launched for the killer.

A man reports his wife missing after an argument; he seems distraught, but the hidden truth is full of horror.

A woman moves to Florida under suspicious circumstances after a love triangle ended with the disappearance of her husband.

After a call on Friday the 13th, José Herran vanishes; when investigators dig into the town he disappeared into, they uncover something monstrous; fear is currency, pain is ritual, and some visitors never leave; horror here doesn't hide - it thrives.

Three friends arrive for a haircut - only to find their barber dead, his body sprinkled with a mysterious white powder; as police dig in, one clue stands out: he'd just come into money; was it a robbery - or a betrayal by someone he never saw coming?

On Friday the 13th, 14-year-old Amber Dubois vanishes; a year later, Chelsea King disappears nearby; as fear spreads, a survivor links the two-and exposes a predator hiding in plain sight.

When a hunter discovers bones in the Pennsylvania woods, it looks like a bear attack; a chilling confession exposes something far more savage - a violent betrayal by those closest to him.

Three friends arrive for a haircut - only to find their barber dead, his body sprinkled with a mysterious white powder; as police dig in, one clue stands out: he'd just come into money; was it a robbery - or a betrayal by someone he never saw coming?

On Friday the 13th, 14-year-old Amber Dubois vanishes; a year later, Chelsea King disappears nearby; as fear spreads, a survivor links the two-and exposes a predator hiding in plain sight.