Five middle-aged men are found naked and strangled. There are no witnesses and no suspects.
A brush fire near LAX reveals a horrific discovery - a burning body bound and gagged with duct tape and investigators are stymied.
A widow is found dead in a pool of blood and it appears that she was tortured in a calculated, cold-blooded killing.
Two teenagers are gunned down in a sandwich shop and the community is outraged at the execution-style killing.
A 35-year-old case involving three women who were strangled and their bodies dumped with little evidence.
Two men are strangled a week apart and a disturbing clue leads investigators to believe they're searching for a single killer.
A man hopes that Los Angeles will offer him a fresh start, but his double life leads to tragedy.
A family diamond may help reveal who killed a kindly grandfather.
A recovering drug addict is bludgeoned to death; there are no witnesses, but an abundance of evidence.
Young lovers are shot in an upscale suburb of Los Angeles.
A bizarre investigation of a flamboyant Hollywood madam gunned down in an execution-style killing; the notorious case involves the usual LA suspects of power, porn and the playboy.
When a popular Hollywood photographer is found bludgeoned to death in his studio, police must determine if it was a business dispute, a random act, or a crime of rage.
The actor had a secret that led to his mysterious death; a nationwide manhunt, employing revolutionary techniques, is launched for his killer.
A gang member gives police a tip years after a young man's bullet-riddled body turned up in the San Fernando Valley.
With scant evidence to go on the L.A. Crime Lab has to use state of the art technology to solve a murder.
A strange type of foam material and a hair are the only clues in the murder of a woman who was last seen alive asking for a ride home from a tavern.
Investigators use an innovative technique to uncover fingerprints and footprints at the scene of a young mother's stabbing death.
A Halloween party turns tragic when two attendees are hunted down and killed in the streets of Los Angeles.
The stabbing death of an Asian student in Beverly Hills leads investigators to Los Angeles' Burmese community and a lethal money scam.
Investigators look for a killer whose elaborate plan left a woman dead and her daughter critically injured in a car accident.
Investigators try to find the one clue that links a killer to a stalking victim who was slain in her own backyard.
Luck runs out for a man who has cheated death six times, sending police in search of his relentless killer.
The latest technology may be able to provide a lead in the murder of a woman 16 years after the crime.
Probing the death of an off-duty detective shot while responding to a neighbor's report of a prowler.
After an affluent couple is gunned down in their driveway, detectives suspect it was a professional hit but don't understand why they were targeted.
Three shotgun blasts to the head kill a young father in his living room.
The Scientific Investigation Team tries a new twist on and old technique to catch a killer.
A competitor becomes the prime suspect in the shooting of a makeup artist; a bomb explosion kills investigators.