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When an outgoing college student is gunned down, police investigate disapproving roommates, a psychic and an infamous serial killer; decades-old evidence reveals a killer that original detectives had previously overlooked.

An Unexpected Killer

Murder in the Canyon

When a devoted mother vanishes from home, a series of grisly roadside discoveries take police on a hunt for a killer; detectives follow a path of greed and desperation until a shocking twist leads to a culprit with a bizarre motive.

Trail of Evidence

After a Texas mother is found murdered in an office bathroom, her husband admits a disturbing past while police chase down a serial killer; the case goes cold until an oversight leads to a surprise suspect and an FBI manhunt south of the border.

Murder After Midnight

An execution-style shooting of a well-loved, self-made couple; early leads take police down a path of greed and desperation until a paper trail leads to a calculated betrayal shockingly close to home.

Blood Runs Thick

When a young mother and beloved coworker is found stabbed in her bedroom, investigators are unable to pin down a killer until secret recordings and evidence stashed in a van are found.

When the Lights Go Out

When a family that runs a beloved vet clinic is gunned down, police investigate disgruntled tenants, a pet owner with an ax to grind and an estranged son; the case stalls until detectives uncover a twisted plot by someone who seemed above suspicion.

A Family Affair

When a loving father of two is gunned down on his driveway, police uncover a hidden affair and workplace grudges before a nervous witness and chilling confession reveal a vicious vendetta from a killer no one expected.

Death on the Driveway

A beloved teacher and mother of four silently vanishes in the middle of the night; a blood-soaked bedroom and lakeside discovery point police to a killer close to home until mysterious tracks in the mud lead to a culprit no one suspected.

A Silent Death

Detectives discover the badly beaten body of a single young woman left bizarrely staged on her bed; fear in the community grows amid a rash of nearby murders until police are handed a break when a fresh look at old evidence points to the killer.

Twisted Intentions

A cat-loving and recently divorced young woman dipping her toes back in the dating game is beaten and strangled in a brutal and unusual way; investigators dive into the murky world of online dating to hunt a killer who could be ready to strike again.

A Date With Death

When a young mother is found dead in a field after a night out, police scour security video to retrace a suspect's steps; the discovery of a second crime scene leads to an arrest, before high-tech forensics reveal a truth no one expected.

Wicked Night Out

A wealthy trader and father of four is gunned-down at home while his family is tied up in a closet; police dig into affairs, mob links and a missing co-worker, until a new lead and a taped phone call reveal a plot decades later.

The Ties That Bind

A look at homicide investigations that conclude with the killer's true identity coming as a shocking surprise.

S3 E17 | Blood Runs Thick