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Officers investigate after armed intruders break into a family's home, and they discover that someone in the family was hiding a secret.

In 2012, a married mother of three disappears and her body is found months later, investigators eventually narrow their search to her boyfriend.

In 2012, a married mother of three disappears and her body is found months later, investigators eventually narrow their search to her boyfriend.

An eight months pregnant woman goes missing right before her baby shower and her panicked family raises the alarm.

Two young women arrive in New York with big city dreams, but those dreams are shattered after a series of events that detectives must piece together.

A popular Maitre D at one of the oldest restaurants in New York is found murdered in his apartment; authorities discover the possibility of other victims.

Police piece together the final moments of a young banker after she disappears, which leads them to a professional who is not as he presents himself.

After a hospital employee mysteriously dies, the police find surveillance footage of a suspected serial killer rumored to be connected to many unsolved crimes.

When a beloved chiropractor is found bludgeoned to death, the police look at those closest to him only to realize the killer is someone they didn't expect.

After finding woman strangled and posed in a gruesome way, the police find more victims which sets them on a path to find the killer before he strikes again.

An old murder case is reinvestigated when a detective starts suspecting the victim's wife, who would gain a lot from his life insurance and assets.

The parents of 1996 Cal Poly murder victim Kristin Smart speak out in their first interview since the recent conviction and sentencing of Paul Flores.

A murder case winds up being more complex than expected when camera footage and other data fails to line up with witness statements.

After Chantay Blankinship's remains are found, investigators sort through dead-end leads until a stunning confession during a church service changes everything.

It takes three trials to solve the murder of the wife of an FBI agent; Dennis Murphy remembers some of the most intense moments he's witnessed in a courtroom.

Texas detectives investigating the murder of 22-year-old Molly Matheson uncover a trail of sexual assault crimes; Josh Mankiewicz is still disturbed.

When 17-year-old Alissa Turney disappears, it takes years before detectives treat her case as a homicide. Andrea Canning reexamines the mystery.

A case in which a student and athlete winds up dead, despite having reached out for help multiple times, proves to be unforgettable.

The body of a mother is found in a house fire, but the autopsy reveals she was brutally murdered; the case goes cold for many years until a confession is made.

The body of a mother is found in a house fire, but the autopsy reveals she was brutally murdered; the case goes cold for many years until a confession is made.

A teenager's life is upended after a fatal accident reveals to be something more disturbing than previously thought.