Investigators uncover a tangled web of relationships and bizarre fantasies after discovering a hardworking father's lifeless body.

After multiple homicides occur along Virginia's Colonial Parkway, Authorities task Det. Danny Plott with finding a serial killer. When investigators uncover a pattern at the crime scenes about the killer's method, it becomes the key to solving the case.

When a young woman turns up dead in South Texas, Captain Calderon fears the killer has disappeared into Mexico. As more bodies turn up, investigators pick up on the trail of a serial killer, leading to a showdown in the streets of Laredo.

A small town reckons with its first murder in 34 years. An elderly woman lies dead in a bathtub, after the killer enters through a hole in the wall.

Two South Carolina women make unthinkably horrifying discoveries on their doorsteps, including ominous death threats and trash bags containing severed human appendages.

A fisherman spots a dismembered corpse floating in Thunder Bay. The case stalls until a fearless young witness delivers a harrowing testimony.

Arson investigators find a man dead in a burned-out Kentucky home. The police investigation quickly uncovers victim number two. It’s up to Detective Meroni to catch the killer before he strikes again.

On Chincoteague Island, a beautiful young mother is murdered steps from a vacant summer home. Detective Danny Plott learns she was lured to her death by a mysterious phone call and soon realizes the killer has been hiding in plain sight.

An elderly couple is viciously attacked at their Phoenix home, and the ravaged crime scene points to a gruesome sexual assault. Determined investigators focus on a missing wedding ring, which could be the key to tracking down this diabolical perpetrator.

Deep in the kudzu of Alabama, police get a call about the body of a young man burned beyond recognition; Detective Kevin Palmer turns to the victim's phone records and picks up on a plot to lure the victim.

A mother's charred body leads detectives to a wolf in sheep's clothing.

After a hard-working young mother goes missing on the mean streets of Washington, DC, Det. Jackie Middleton must get to the bottom of a cold-blooded conspiracy.

After someone executes a charismatic New Hampshire businessman in his sleep, the case goes ice cold; detective Robert Freitas uses his wits and a wiretap to outsmart a deceitful associate who believed he'd long since gotten away with murder.

A series of murders puts the residents of a small town on high alert; as bodies continue to pile up, the urgency escalates, pitting Detective Dave Frankel in a race against time to capture a deranged spree killer before he claims his next victim.

Jacksonville deputies locate the bones of a missing woman. As Det. Mechelle Soehlig pieces together the victim’s final steps, a trail of clues lead her from the site of a late-night house party to a mysterious Icelandic biker known as “Viking.” English

Two brothers from Michigan search for buried treasure on Oak Island off the coast of Nova Scotia.

In rural Minnesota, a masked murderer bludgeons an entire family in their sleep; as small-town secrets unravel, Sheriff Mike Gormley uncovers a dangerous love triangle and a vengeful killer who is willing to risk his own blood for retribution.

A med student is found pinned to her bedroom floor with a large knife. Suspicions turn to a disarmingly casual 911 caller. But when the caller's alibi checks out, Det Frank Dillard must employ his skills as an interrogator to hunt down a serial killer.

A quiet Maryland town is shaken to its core when a local couple is savagely slain in their bedroom. Det. Joe Bellino wonders if the key to unlocking the mystery lies with the victim's disabled daughter, who bore witness to both murders.

A Seattle woman is slain steps from an infamous homeless encampment known as "The Jungle". After navigating a set of false leads, Det. Cloyd Steiger connects her case to a pair of unsolved homicides, triggering a city-wide hunt for a serial killer.

Some three miles off the Jersey shore, boaters discover the decomposed remains of a 16-year-old girl, bound in metal chains. Detectives from Delaware and New Jersey join forces to unravel a cold-blooded conspiracy and catch an unlikely killer.

The abduction and murder of a beloved young schoolteacher shakes a sleepy New England town to its core. Veteran investigator Robert Cushing is called in to lead the manhunt, but even he is caught off guard by depravity of the killer's plan.

The body of a South Carolina man turns up floating in the Black River. Investigator Allen Morris, working his first homicide case, must scrutinize the victim's wife and mistress and ultimately untangle the web of deceit surrounding his disappearance.

The murder of a young entrepreneur in the entranceway of his family home sends shockwaves through his affluent seaside community. To catch the killer, Detective Dale Mason must navigate a tangled conspiracy and outwit a band of career criminals.