Before They Kill Again

Before They Kill Again Creeping Up on You

When a Mother's Day killing horrifies a town, investigators discover the psychopath has struck before; realizing that any woman could be his next victim, predicting the killer's next move hinges on understanding what motivates a monster.

11:00 AM on Investigation Discovery USA - Eastern 38

Before They Kill Again Creeping Up on You

When a Mother's Day killing horrifies a town, investigators discover the psychopath has struck before; realizing that any woman could be his next victim, predicting the killer's next move hinges on understanding what motivates a monster.

11:00 AM on Investigation Discovery USA - Eastern 773

Before They Kill Again He Watched Them Burn

As Washington, DC burns, police realise they are hunting the most prolific arsonist in US history, and he has been getting away with it for decades.

12:00 PM on Investigation Discovery USA - Eastern 38

Before They Kill Again He Watched Them Burn

As Washington, DC burns, police realise they are hunting the most prolific arsonist in US history, and he has been getting away with it for decades.

12:00 PM on Investigation Discovery USA - Eastern 773

Before They Kill Again He's Taken a Hostage

When a negotiator gets called to a hostage situation, he must determine how to talk the gunman into laying down his weapons before people die.

1:00 PM on Investigation Discovery USA - Eastern 38

Before They Kill Again He's Taken a Hostage

When a negotiator gets called to a hostage situation, he must determine how to talk the gunman into laying down his weapons before people die.

1:00 PM on Investigation Discovery USA - Eastern 773

Before They Kill Again The Twelve Signs He Will Die

A copycat Zodiac killer terrorises New York City while keeping cops guessing his identity; it falls to veteran NYPD detectives to outwit him.

2:00 PM on Investigation Discovery USA - Eastern 38

Before They Kill Again The Twelve Signs He Will Die

A copycat Zodiac killer terrorises New York City while keeping cops guessing his identity; it falls to veteran NYPD detectives to outwit him.

2:00 PM on Investigation Discovery USA - Eastern 773

Before They Kill Again The Outdoorsman Killer

Detectives track a predator who uses the great outdoors as both a hunting ground and a hiding place; the killer's knowledge of the wilderness gives him advantage, forcing investigators to dig deep into his psyche and rely on their training.

3:00 PM on Investigation Discovery USA - Eastern 38

Before They Kill Again The Outdoorsman Killer

Detectives track a predator who uses the great outdoors as both a hunting ground and a hiding place; the killer's knowledge of the wilderness gives him advantage, forcing investigators to dig deep into his psyche and rely on their training.

3:00 PM on Investigation Discovery USA - Eastern 773