Forensic Files II

An explosion that killed a California farmhand was eventually linked to a bomb. Looking for a motive, investigators hear ominous rumors about a jealous rage.

When a college student was stabbed in her apartment, suspicion fell on her roommate -- until a bloody shoe print revealed the real killer.

Texas detectives race to stop a killer targeting law enforcement. Finally, a single bullet casing uncovers the bizarre reason the killer wanted revenge.

When a young family is killed, investigators work to decipher the threats spray painted on the walls of the crime scene.

A young woman is killed but her boyfriend escapes a gruesome attack. After nearly 50 years without an arrest, a new forensic test exposes a man with a dark secret.

After two workers are shot at a construction site, police zero in on one important clue -- one of the killers stepped in dog feces.

A Texas ex-con was convicted for a murder he said he didn’t commit. From behind bars, he's determined to use forensic science to prove his innocence.

Doctors couldn't figure out why a California woman kept getting sick. When she died, investigators found out someone had been lying.

When a 79-year-old woman is found shot to death in her home, investigators initially suspect her husband or a violent neighbor. Shell casings recovered at the scene and a high-tech database reveal the unlikely killer.

The body of a 24-year-old criminology student is found wrapped in a blanket alongside a desolate road in Brooklyn, New York. Police discover the bouncer at a SoHo bar may be her killer.

When a 79-year-old woman is found shot to death in her home, investigators initially suspect her husband or a violent neighbor. Shell casings recovered at the scene and a high-tech database reveal the unlikely killer.

A young single mother is abducted from a gas station and later found stabbed to death near an oil field. Detectives use shoe and tire impressions to weed out numerous suspects and find their killer.

When a 23-year-old Marine dies in his bedroom, doctors initially believe a heart attack is to blame, but when arsenic is found in his organs, his wife is charged with murder. A sharp attorney and toxicological testing uncover the truth.

When an 18-year-old girl is abducted while talking on a pay phone, forensic evidence found on her clothing points police in the direction of a suspect who shockingly confesses that he didn't act alone.

In a story of a kidnapping, ransom and murder ring in LA, a pair of retired scientists use sonar equipment to locate victims at the bottom of a reservoir.

Patients at the VA hospital in Clarksburg, West Virginia, keep dying after experiencing shockingly low blood sugar levels. An investigation into their deaths reveals an overnight nurse was injecting patients with lethal doses of insulin.

A 70-year-old retired veteran is found dead on his boat after a bad sea storm. Detectives discover he was killed during an attempted robbery after winning $400 playing Keno.