Abbott and Costello Meet Dr. Jekyll and Mr. Hyde

Slim (Bud Abbott) and Tubby (Lou Costello) are a pair of inept US cops visiting London to study English police methods. An encounter with beautiful young suffragette Vicky Edwards (Helen Westcott) leads to the discovery that her uncle, Dr. Henry Jekyll (Boris Karloff), has created a potion, which transforms him into the evil Mr. Hyde (Eddie Parker), monstrous scourge of the city. (Universal Pictures UK)