The disappearance of Johnny Gosch, a 12-year-old paper boy from West Des Moines, Iowa, on September 5, 1982, remains one of America's most perplexing missing child cases. What happened is still a mystery, and many are still searching for answers.
In 1991, Vicky Hamilton and Dinah McNicol vanished six months apart. Their cases stayed cold until 2006, when Angelika Kluk's murder led to the arrest of Peter Tobin. DNA linked him to Vicky and Dinah, exposing him as an evil serial killer.
In 1999, Charlene Lunnon and Lisa Hoodless vanished, sparking one of the UK's largest missing persons searches. Unbeknownst to police, they were held captive by paedophile Alan Hopkinson in Eastbourne