The unspeakably gruesome murders of an elderly couple rock the town of Davis, CA. Police examine the victims’ bizarre injuries to determine if this is the random work of a sadistic psychopath or the premeditated plot of an unhinged family member.

An Upstate New York cabby is shot dead in his car, and the entire area is dumbfounded as to who would kill a man known for his great generosity. A rapid-fire investigation leverages technology to uncover a treacherous plot hatched in a salacious affair.

A Philadelphia mother is murdered at home, execution-style- right before her child's eyes. The hunt for her killer leads to a maddening series of dead ends until months later, when the case breaks in an astonishing direction.

A woman and her 5-year-old son are brutally murdered in a field outside Dallas. A critical piece of evidence found at the scene sends one detective on a 20-year-long hunt for the killer.

The disappearance of 21-year-old Michaela MacVilla sets off a massive mobilization of law enforcement, led by state police investigators. It will require them to solve a complex mystery, by delving deep into the world of digital forensics.

When a high school sophomore is found brutally raped and murdered, the clock is ticking as Las Vegas Police hunt a monster. Can they catch him before he strikes again?

A late night encounter leads to the horrific murder of a young Birmingham woman, igniting a sense of panic throughout the city. A man offering information in the form of mystical visions helps guide detectives to the killer.

In Pensacola, FL, a beloved barber is gunned down in his shop in broad daylight. DNA left at the crime scene may hold the answer to solving this murder mystery.

Penske Racing chef Cindy Albrecht goes missing from her home near the Indianapolis Motor Speedway in Speedway, IN. Then, her headless body is later found by deer hunters.

Surveillance video captures the drive-by shooting of father Nicoh Mayhew. Nicoh's nephew is a prime suspect but has an airtight alibi - he's in jail. Crime scene video and jail calls uncover a murder plot that threatens the entire justice system.

Fresh-faced teen Barbara Rowan's family is devastated when she fails to come home one evening. Days later, she is found dead, but it will take three decades, a dogged cold-case detective, and advancements in crime technology to find her killer.

Anna-Sigga Nicolazzi meets the detective and prosecutor who took on the case of Karen Ann Watson, a wife and mother who was brutally stabbed to death. Nearly 30 years after the crime, they track down a killer.

A Pennsylvania family is decimated when masked men ambush them at home with guns and crude bombs, killing a mom and her daughter. The shell-shocked family points the finger at one of their own, but lack of evidence stalls the case for 30 agonizing years.

Miles City, MT, holds its breath while police search for missing husband and father Marty Etchemendy. As they race to find Marty alive and track down those who ripped him from his family, an air of evil permeates an abandoned car 100 miles from town.

Nassau County, Long Island, flips upside down when an unknown shooter murders a cop and an innocent motorist on the Cross Island Parkway.

A simple break in routine leads to the discovery of a murdered grandfather and a missing child. Investigators must contend with a devious killer who's taken pains to cover their tracks to unravel this tragic tale of lies and betrayal.

Diana Duve's life seems idyllic - with close loved ones, a fulfilling nursing career, and a charming boyfriend. Then she suddenly vanishes, and the ensuing investigation unearths shocking revelations of a past riddled with vitriol and violence.

When 12-year-old Naomi Jones goes missing, her mother sounds the alarm, triggering a massive search effort. But when they discover her body a few miles from her home, a team of investigators sets out to find the heartless killer who took her life.

When a popular high school athlete is caught in the crossfire in New Haven, CT, a dogged police detective confronts a rigid code of silence in the community, while two generations of one family must endure the tragedy of big-city gun violence.

A 19-year-old convenience store clerk vanishes in Sheridan, WY. A gruesome discovery seems to point police to a cold-blooded killer. Would a gruesome discovery point police to a cold-blooded killer?