The Killer Beside Me

Theresa Wesolowski, 22, is murdered on May 29, 1999; police are baffled for nearly 10 years before finally getting a break when a new DNA technique identifies Wesolowski's coworker, Mark Libecki, as her killer.

Sandra Berfield suffers years of harassment from coworker Steven Caruso and has him jailed for violating a restraining order; released, Caruso sends a pipe bomb to Berfield who is killed instantly after picking up a package left on her front porch.

After Gayle Isleib is shot to death on April 30, 1996, police identify her coworker, Tyrone Montgomery, as her killer; they find love poems as well as evidence that Montgomery planned to kidnap Isleib and murder her husband.

In Tacoma, Wash., businessman Robert Henry is murdered by a masked gunman, and his wife, Paula, points the finger at Henry's former business associate, Larry Shandola.

After Leesa Nascimento is shot dead, a recently fired coworker, Lorenza Sam, is tied to her murder and arrested.

Alice Hufnagle is raped and murdered on Nov. 22, 2002; after following numerous leads and dead ends, police find the vital clues that lead them to Jeffery Vample, Alice's co-worker at a local pharmacy.