In the Miami suburbs, a hard working mother from Trinidad vanishes into thin air; detectives Danny Smith and Jonathan Zeller soon uncover her secrets but then are stalled until they come up with a highly unusual way to smoke out the perpetrator.

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

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.

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

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.

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 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.

When a promising young realtor plunges to his death from the 14th story of a trendy Miami high-rise, first responders assume suicide. But Det Joe Schillaci suspects foul play and follows a series of clues to the bloodied body of a second victim.

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.

A North Carolina teen's body is found in an empty dirt lot - beaten, blindfolded, and riddled with bullets. To catch an unlikely band of killers, Det. Josh Hamilton must trace a series of mysterious transactions and expose an ugly truth.

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

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.

In Bensalem, Pennsylvania, the long-dead body of a kind natured computer programmer is found submerged in the bathtub of his ransacked house. Leads are scarce until Detective Chris McMullin discovers a series of troubling voicemails.

Amongst the ashes of a barn fire, N.C. investigators discover the remains of two dismembered women; agent Nick Deming must dig into the victims' personal lives to uncover a revenge scheme and a killer.

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.

In Minnesota, firemen put out a housefire and find a woman's body inside; Agent Rob Fraik learns that the victim was babysitting a friend's daughter, who is now missing; it is a race against time to track down the killer with a horrifying motive.

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.

After someone abducts a vivacious Ohio undergrad in broad daylight, local police join forces with the FBI. The discovery of blood-soaked evidence kicks the case into high gear and brings investigators face-to-face with the depths of human depravity.

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.

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.

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 hardworking father of five lies dead on his kitchen floor with a bullet to the back of the head. To get to the bottom of the mystery, Det. James Colley must untangle a web of twisted relationships and bizarre fantasies.

A home health care aide's body floats in a rural Connecticut creek, and detective Garritt Kelly joins the investigation to bring justice to a community gripped by fear. But Kelly will need to employ burgeoning forensic technology to secure a conviction.