The Killer Beside Me

A Tacoma, WA, exec is murdered by a masked gunman. His wife tells the police she thinks he was killed by a former business associate. Over the next six years, the lead detective pieces together the evidence to find the killer.

Theresa Wesolowski is found dead near the Wisconsin factory where she works. Police are baffled for nearly 10 years until a new DNA technique identifies one of her coworkers.

Gayle Isleib is brutally gunned down in her driveway after coming from work at a local department store. Police uncover a twisted tale of infatuation, stalking and a kidnapping plot gone awry.

Alice Hufnagle is found raped and strangled in her Pennsylvania home. Numerous leads and several dead-ends lead police to question her coworker at a local pharmacy.

Massachusetts waitress Sandy Berfield is killed instantly when she opens a package bomb left on her porch. Detectives uncover evidence of harassment and a rejected coworker's deadly plan for revenge.

Texas florist Leesa Nascimento is found floating in a lake with a gunshot wound to the head. Police uncover crucial evidence that suggests a recently fired employee may be responsible for the killing.