Minnesota police hunt for a killer caller who confesses to a string of murders in a chilling, high-pitched voice, begging for forgiveness no one can identify him until one woman survives a brutal attack.
A serial sniper terrorizes the entire D.C. metro area by discreetly targeting random victims out in public and in plain sight.
Police in Hartford, Conn., investigate a string of ruthless killings in the Asylum Hill area committed by a killer with a devastating mark that leaves his victims nearly unrecognizable.
When multiple victims' bodies are dumped around Louisiana's bayou area, a task force is formed to catch a killer who police believe may have strangled over 20 men.
Investigators in East Baton Rouge, La., hunt for a serial murderer who carefully carves up and cuts the bodies of his victims after death.
After a divorced mother is found murdered in her home, police discover she had an unusual array of people involved in her life.
After the naked body of an Ohio State senior is found, investigators bring in a suspect for questioning they play a dangerous game of give and take hoping to get the truth and bring justice to the victim and her family.
When a woman is found dead in her home, police aren't sure if it's an accident or a murder until they get an unexpected call, from an unexpected person.
After a hard working Virginia couple is brutally murdered on the eve of their anniversary, the ensuing investigation goes cold until detectives find the most unlikely of suspects.
A year after a popular high school senior goes missing, a witness comes forward claiming to know who is responsible for her disappearance and detectives must unravel a web of lies in order to learn the truth.
After authorities finally identify the prolific Green River Killer, it becomes a cat-and-mouse game as they must get inside his mind to get him to lead them to the remains of other missing women.
A woman discovers the body of her nephew and investigators must unravel the events that led to his demise, but with three viable suspects, it takes about a year to crack the case using the smallest piece of DNA evidence from the crime scene.
Kathy Lujan, a married mother of two young boys, is believed to have run away with one of her lover Detective Rosie Rodriguez chases a trail of evidence and suspects that reveal the truth about Kathy's whereabouts.
Police suspect a mother of two has relapsed into drugs when she disappears, but her family and friend suspect foul play.
Although a man claims he accidentally shot himself, the crime scene does not corroborate his story, and a love triangle unfolds.
A wife returns home to find her husband shot dead, and detectives search for the truth for two years.
After a college freshman goes missing without a trace, concerned friends and family talk to police about his last whereabouts those conversations, however, raise more questions than answers when they point to a potentially deadly love triangle.
A mother's only hope of finding her missing 20-year-old daughter rests in the hands of a seasoned investigator from the DA's office, who takes on her case after it's been cold for seven years.
In Florida, a devoted mother disappears into the night after tucking her daughter into bed investigators chase down a trail of leads that include multiple suspects, culminating in a horrifying discovery.
When a hardworking single mother with a history of heart issues is found dead on the front steps of her home, detectives assume she died of natural causes, but as the investigation progresses, it becomes clear foul play was involved.