24-four-year-old Caroline Nosel befriends new colleague Christopher O'Kroley, but he soon begins harassing her. After he is dismissed from work, he sets on to seek revenge leading to a tragic outcome.

One June morning in 2013 in Dundalk, MD, cleaning lady Myra goes to the property office and sees a nightmare scene. The office has been ransacked and manager Melinda Schaefer is dead.

Kerri Harris and a colleague find a hidden camera in the ladies' room, and they make a complaint. However, as police begin their investigation to find out who put the camera there, Kerri is found stabbed to death.

When Alisha Bromfield's supervisor, Brian Cooper, promotes her to team leader she should be ecstatic. But Brian's motives are not entirely good. Alisha stands her ground with Brian, letting him know she doesn't want a relationship beyond co-workers.

When Andrea Farrington meets fellow employee Alex Kozak, she feels that romance could be on the horizon, then Farrington's hopeful feelings are replaced by suspicion and fear, leading to a final rejection that has fatal consequences.

Bob Peterson invites himself over to his co-workers Gene and Jaye-Jaye Thurnau's new home to give them a housewarming present; later, Jaye-Jaye leaves the guys alone to run an errand, during which time they vanish.

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 her killer.

Sandra Berfield suffers years of harassment from a co-worker and has him jailed for violating a restraining order. Later, Sandra is killed instantly after picking up a package left on her front porch, which held a pipe bomb.

Gayle Isleib is brutally shot to death on April 30, 1996. Police investigate and identify her killer; they find love poems as well as evidence that the killer planned to kidnap Isleib and murder her husband.

In 1995, Robert Henry, an exec in Tacoma, WA, was murdered by a masked gunman. His wife tells police she thought he was killed by a former business associate. Det. Yerbury investigated and pieced together the evidence that convicted the killer.

Leesa Nascimento was murdered on July 6, 2010 by being shot in the head. The killer is traced after evidence is found that ties them to the murder.

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 the killer.

A retail store employee’s crush on manager Antoinette Venditti-Bruce escalates into an obsession after he’s fired for inappropriate behavior. When she is transferred out of state for work, the stalker tracks her down to carry out his twisted plans.

The brutal murder of a legal secretary in her Macon Georgia home leaves police with few clues as to who would want her dead. Then a co-worker's alibi falls apart, revealing a callous conspiracy of greed that shocks this genteel southern town.

A Virginia Beach massage therapist disappears before work, sparking an intense but fruitless search. Weeks later, a cyclist discovers trash bags in a swamp, the contents of which will rock the town and forever change the lives of Brianna's loved ones.

A mother forces her boyfriend to go to the police about his role in an insurance fraud scheme. However, this well intentioned deed starts a chain of events that will soon lead to her family's destruction.

Mystery shrouds a San Diego exotic wildlife park when a valued employee, Denise Vasseur, goes missing. As the search to find her intensifies, investigators fear that the most dangerous predator at the park may not be an animal.

Two school secretaries disappear in broad daylight, while on their lunch break; one of the school secretaries is found dead and the other is still missing; police suspect that the perpetrator of the crime has ties to the school.