On January 27, 2017, 20-year-old Elaine Park goes to a movie with her boyfriend and then sleeps over at his apartment. At 6:00am the next morning, surveillance footage shows her leaving his apartment. She hasn't been seen since.

On a quest for personal enlightenment, Kristal Reisinger, a 29-year-old mother of one, heads out to take part in a drum circle in Crestone, Colorado on July 13, 2016. But as night turns into day, Kristal disappears, and she hasn't been seen since.

On May 1, 2017, 18-year-old Desirea Ferris spends the day hanging out with her sister and plans to celebrate her mom's birthday that night. She never makes it home and hasn't been heard from since.

On August 10, 2018, Matthew Weaver, Jr. goes out with a friend and after he drops her back off at home, heads for a drive through the Malibu canyons. He sends a mysterious text to her the next day and is never heard from again.

In 1976, the first of four children is murdered in suburban Detroit.

A young woman's dreams are cut short when she disappears after a night out.

A respected mother of three vanishes in Colorado, but she has a secret.

Amy St. Laurent vanishes while out on a date with an out-of-town friend.

A woman hitches a ride to a truck stop and disappears.

A high-school senior disappears after dropping off his best friend.

Maura Murray goes missing after her car swerves off the road.

A man disappears after discovering that his girlfriend is cheating on him.

A college student disappears after leaving her son with a childhood friend.

America's leading atheist disappears along with two family members.

A Tampa Bay area realtor goes missing, and the case goes cold.

John Spira is a blues guitarist who disappears after work one evening.