Forensic Files

Christina Sanoubane is found stabbed to death in her Cedar Rapids apartment after moving away from her abusive boyfriend. But the ex isn't the only suspect. A footprint on a hamburger bun may hold the key to solving her murder.

Darlene VanderGiesen goes missing in South Dakota after receiving a series of threatening emails. Police find hints of a secret life inside her computer and disturbing evidence in an unexpected location.

Music teacher Kristine Fitzhugh is found dead by her husband at the bottom of the stairs of their Palo Alto, California, home. Upon further investigation, a luminol test reveals evidence of murder in the kitchen.

Susan Fassett is gunned down as she's leaving church choir practice in Poughkeepsie, New York. The investigation reveals the long-held secrets of the suburban housewife. A love triangle points in one direction, while the evidence points in another.

Building contractor Ari Squire is found crushed beneath a truck when firefighters respond to a call about a garage fire. Was it murder, suicide or fraud? Police follow the money trail for clues, but only science can solve the bizarre case.

A suspicious fire nearly kills Michael Ratley, his wife, Effie, and their infant son. A month later, Effie is found beaten to death in her bedroom. Investigators have no suspects in the brutal crime until science uncovers an elaborate plan for murder.

David Castor suffers a slow, agonizing death after ingesting antifreeze. The evidence at the scene confounds investigators, and his wife, Stacey, maintains it was suicide. It takes years for forensic science to find answers.

A serial killer is on the loose in New York City. He targets intoxicated men in gay bars, leading the media to dub him the Last Call Killer. A decade passes before advances in forensic sciences help the police pinpoint the killer.

Avis Bank and her unborn child are brutally murdered during a home invasion. Her fiance becomes the prime suspect when investigators uncover his affairs with other women.

When 16-year-old Tara Munsey goes missing after her shift at a Virginia fast food restaurant, it is unknown if she ran away or was the victim of foul play. It's weeks before police find evidence of an encounter gone wrong.

The dead bodies of Joan Rogers and her two teenage daughters are found floating in Tampa Bay. Florida police have little evidence to go by until a public billboard turns ordinary citizens into detectives.

The suburban calm of Clear Lake, Texas, is shattered when Tiffany Rowell and three of her friends are found brutally murdered. The scene yields few clues until a neighbor comes forward with a possible lead.

Texas college student Jenna Verhaalen is found strangled to death in her apartment. Forensic evidence and eyewitness testimonies reveal her killer may be close to home.

Rebecca Barney meets a lover in cyberspace and plans to meet face-to-face. A day later, Rebecca and two others are shot to death in Tulsa, Oklahoma, home. The killer disappears into thin air, but not without a trace.

Kathy Loreck is murdered on a jogging trail in broad daylight while talking to husband on the phone. Crafty police work and a chance encounter prevents the investigation from going up in smoke.

Real estate developer Alan Helmick is found shot to death in his home by his wife, Miriam. A computer search exposes some dark secrets, but it's 20-year-old clue that helps investigators solve the case.

The body of Summer Baldwin is found in a suitcase in a Texas landfill. Police fear a serial killer is on the loose -- one who has a penchant for redheads.

Nursing student Tamika Huston goes missing from her Spartanburg, South Carolina, home. A tip leads detectives to her car, where they find a set of keys that could help solve the case.

Funeral director Lonnie Turner Sr. is shot to death in his home. A homemade mask found near the scene of the crime indicates the victim and killer knew one another.

Young mother Tammy Tatum is found sexually assaulted and murder in her Longmont, Colorado, apartment. Police suspect her estranged husband, but there's not enough evidence to charge him. The case goes cold -- until the killer strikes again.