Although femicide is a recognised crime in Mexico, when a woman disappears, the authorities are notoriously slow to act. But there is someone who will take on their case.

A teenage girl's mysterious disappearance(s).

Piecing together the quiet, lonely life of Kathryn Norris.

Ruth Thalí became an overnight sensation on a game show. Then she disappeared.

Thirteen years ago, Chris Velten disappeared while retracing the travels of explorer Mungo Park in Africa. He hadn’t been heard from at all — until he sent a friend request.

On a November morning, Olympic rower and financial advisor Harold Backer left for a bike ride and never returned. His disappearance remained a mystery – until letters began arriving at the homes of his investors.

Nearly 20 years ago in a remote California town, a 16-year-old named Karen Mitchell disappeared. The case went cold, but last month local law enforcement started looking at it again after the arrest of a former resident: Robert Durst.

A Russian soldier vanishes in Ukraine.

In 1945, a fire tore through the home of George and Jennie Sodder. Four children escaped; five vanished.

Margaret Profet, evolutionary biologist and MacArthur grant recipient, disappeared in 2005. She has neither been seen nor heard from since.

An investigation into the disappearance of a 24-year-old British cruise ship activity director from the Disney Wonder opens the strange and insular world of cruise employees, who vanish mysteriously at alarming rates.