20/20 on ID Presents: Homicide

In Canyon Lake, Calif., a serial killer targets women, then the killer is finally caught, and no one can believe the face or motives behind the cold-blooded murders.

In Syracuse, N.Y., Jeff Cahill beats his wife, Jill, to within an inch of her life with an aluminum bat, then he sneaks into her hospital room and murders her.

Sharon Marshall dies in a suspicious hit-and-run accident, leading investigators to uncover a sordid tale of kidnapping, child abuse, murder, and false identities.

When fishermen in the Florida Everglades make a gruesome discovery, it unleashes a mystery about a woman, a mobster, and a murder.

When Laura Miller vanishes, police locate her remains along a Texas highway where over two dozen other young women have also turned up dead for over three decades.