Dateline: Secrets Uncovered

A romantic interlude on a September night turns tragic when a woman slips over the edge of a cliff and falls to her death; authorities ask whether she fell or was pushed, and it will take 20 years to find the answers.

In a plot straight out of an Alfred Hitchcock film, a woman peers into a neighbor's yard and catches a glimpse of something unsettling; she sets into motion a chain of events that will divide a family and a jury.

A young mom's abduction at gunpoint leads her family and veteran investigators to spend desperate days trying to find out where she was taken, but the suspect and motive both come as a surprise.

Detectives often hit dead ends, but one young detective sees dead ends as starting points; she's beaten the odds in her own life, and, now, she's determined to beat them on the job using her head and her heart.

Was he missing or was he hiding; he had a wife, a good job, a daughter he loved; investigators were told he also had a secret and they went on an undercover mission to find the truth.

She was beautiful, trusting and troubled; the young woman from a prominent family was just turning it around and realizing her promise; then she vanished; when the police seemed unable to find her, her family hatched a plan to solve the mystery.

After four people turn up dead, investigators chase a serial killer who may be reenacting scenes from a horror movie released in the 1980s.

For investigators, motive can be the hardest thing to find. This crime took place in Florida but detectives didn't discover a motive for murder until they looked into a tropical island thousands of miles away, where a festering grudge was born.

Dr. Mark Weinberger, a successful surgeon, hides a secret from his medical staff and from his adoring wife; after a malpractice suit and a death, the doctor vanishes, sparking an international manhunt and a family's fight for justice.

Celebrity dog trainer Mark Stover and his wife Linda build a thriving business and a beautiful home, but their dream life doesn't last; an affair leads to a bitter divorce, then Mark vanishes in a mystery with the makings of a Hollywood thriller.

It was Easter Sunday; the Stock family celebrated at home; hours later, gunshots turned their farmhouse into a house of horrors; there was an arrest but one tiny clue didn't fit; this case was far from being solved.

Russel Douglas is a troubled father hoping for a fresh start when he is found shot dead in his car; the investigation turns up few clues until an anonymous tipster sends detectives on an international manhunt to unravel a mystery.

Young nursing student Michelle Le disappears; something draws her out to her car; as her loved ones launch a very public effort to find Michelle, investigators begin their own methodical search, suspecting she may have been murdered.

Young women out for a little fun with their friends, Kenia Monge and Lydia Tillman don't know each other, but their stories will become forever intertwined, both of them falling prey to a smooth-talking stranger with a terrifying secret.