CW: This episode contains details relating to the sexual abuse of children. In 26 years undercover with the FBI, Bob Hamer developed a thick skin. He's posed as a contract killer, a drug dealer - even an international arms dealer. But there's one case he could never quite shake off. Vanessa Kirby tells the chilling story of Bob's descent into the twisted world of NAMBLA - an organization dedicated to enabling child sex abuse. Could YOU take them down? From SPYSCAPE, the home of secrets. A Cup And Nuzzle production. Series producer: Gemma Newby. Produced by Frank Palmer. Music by Nick Ryan.