Chasing Criminals

After the shocking death of Heather Maples, the student community of Murfreesboro confronts the sobering truth that a killer is lurking among them; detectives unlock her cellphone to find a web of potential suspects and retrace her last night alive.

A Pennsylvania town is filled with suspicion after 19-year-old Erica Miller disappears without warning; her mother posts flyers around town, prompting one resident to question the unusual behavior of a family friend.

Single mother Brandi Peters and her three young children are brutally murdered inside their Tallahassee, Fla., home in November 2010; detectives are shocked to uncover a killer who is a real-life monster hiding in plain sight.

The disappearance of a popular resident of Eastman, Ga., rocks the small town; as the search for Russell Ray intensifies, any hope of finding him alive dwindles after police make a horrific discovery.

An unthinkable crime cuts short a family man's quest for a better life in Florida; to find the culprit, detectives must unravel a deadly web of deception woven long before the killer ever took aim.

In 2007, Marilou Johnson's millionaire boyfriend, Roger Blanchard, reports her missing; police have little to go on in their search for the mother of three until a witness steps forward.

A religious community mourns an elderly couple after they turn up viciously murdered in their home; in a race to capture the killer, investigators discover that their deaths weave into a larger web of lies and wicked desires.

When a young man goes missing, it sets in motion a 20-year investigation that uncovers two bodies and a lifetime of lies; investigators discover that the elusive killer hides insatiable desires and is guilty of more than just murder.

When LeRyan Nicholson's sisters investigate his disappearance, they uncover a series of secrets that leads them to the heartbreaking truth: Parris Hopson's disappearance may be connected to LeRyan's violent death years earlier.

A 10-year-old girl walks home from her friend's house at dusk, then mysteriously vanishes; as it becomes clear she's been abducted, suspicion falls on a series of men; a night of celebration ends in murder for a young entrepreneur.

When Aliza Sherman is stabbed to death in broad daylight, police are convinced the attack was premeditated and Aliza may have known her killer; the fire that kills Sheila Deviney is ruled an accident until new evidence points to arson and murder.

A war veteran turns up dead, and a missing man leaves a creepy voicemail.

A beer entrepreneur is gunned down, and two friends die while on vacation.

A man relocates only to be stabbed, and a student is found dead in her car.

When the charred remains of Eric Cates and his dog, Gypsy, are found in his pickup truck, his mother must fight a long battle for justice; an unidentified assailant randomly murders Zachary Lamb, who was driving home with his fiancée after an event.

A severed foot is an ominous clue in the case of a missing mother of five.

One mom is missing, and another spurs a manhunt for her daughter's killer.

In an ironic twist, a woman vanishes while looking for her missing friend.

A serial rapist stalks elderly women for nearly 20 years before escalating to murder.

A sniper targeting abortion doctors turns murderous and a DNA "needle in a haystack" identifies the gunman.

A small town encounters satanic rituals and a savage killer.

A serial killer in Spokane, Wash. murders prostitutes and leaves a bag with a smiley face on the victim's head.

Knowledge of insects by a forensic entomologist leads police to the killer of a wife and mother of two.

Investigators work to solve a double homicide in the small town of Hudson, Wisc.

Officials look to state-of-the-art DNA analysis to help capture a serial killer in the Louisiana State University area of Baton Rouge.

Investigating a series of fires in California's Sam Joaquin Valley that killed four, investigators determine a respected arson investigator may be the arsonist.

Police must use forensic science to solve the mystery of a prominent businessman whose burnt body is discovered.

A phantom white supremacist sect takes credits for bombings and bank robberies in Spokane, Wash., but FBI forensic photo analysts clears the picture.

When the prime subject for four factory deaths has a perfect alibi, investigators use video analysis, timeline reconstruction and a 3-year-old fingerprint to solve the crime.

Sixteen years after a college student is found raped and strangled on a buffalo bike path, DNA technology and other clues help catch the killer.