The disappearance of Adam Alexander baffles friends and law enforcement. Years later, investigators undertake a massive excavation.

Police scour the seas when Debbie Griggs, a pregnant mother of three, goes missing. But her final resting place might be closer to home.

After teenager Louise Smith vanishes, her family frantically searches for clues. Then, surveillance footage points investigators to a shocking suspect.

The disappearance of Joe Pooley, a teenager with a learning disability, rattles his family. But evidence and answers elude investigators.

While traveling in India, Surjit Athwal disappears. The ensuing investigation focuses on the family of her soon-to-be ex-husband.

When Jamie Lavis' parents realize he's missing, a local bus driver steps up to help them. But they might have put their faith in the wrong person.

Carol Taggart's last-known moments come under intense scrutiny when she disappears, while her son's story begins to unravel.

On a summer evening in 2004, 8-year-old Mark Cummings goes out to play on the estate around the tower block where he lives with his family in Glasgow, Scotland. But when his mother calls him in for supper, Mark does not come home.

When mother-of-three Mary Jane Mustafa goes missing her family spend nearly a year searching for her. Then police are called to a flat about an entirely unconnected incident. Inside they see a hand sticking out of a padlocked freezer's contents.

Trapped in an abusive marriage, ten days from divorce Joanna Simpson is reported missing by her husband, Robert Brown. Quizzed by investigating officers, missing turns to murder as he admits killing Joanna.