A Fish Called Wanda

London-based gangster George Thomason plans a jewel heist with his right-hand man, Ken Pile, an animal lover with a stutter. They bring in two Americans: con artist Wanda Gershwitz and weapons expert Otto West, an ignorant and mean-spirited anglophobe. Wanda and Otto are lovers, but they hide this from George and Ken, pretending to be siblings, so Wanda can work her charms on them. The heist is successful and the gang escapes with a large sum in diamonds, which they hide in an old safe. Soon afterward, Wanda and Otto betray George to the police and he is arrested. They return to collect the diamonds, with Wanda planning to double-cross Otto as well, but find the safe is empty. In Ken's fish tank, Wanda discovers the key to a safe deposit box where George has moved the diamonds, and hides it in her locket.