Superman & Batman #7

The Legend of the Batman—Who He Is and How He Came to Be! Bruce Wayne's parents are murdered by a cheap crook, and young Bruce vows to avenge their deaths by warring on all criminals. The Joker Batman encounters a new criminal who broadcasts his intentions to murder rich men and steal their prized possessions. The Giants of Hugo Strange Batman faces a familiar arch criminal who has invented a serum to create a race of giant monsters. The Cat Batman and Robin take a trip aboard an exclusive yacht in order to prevent the theft of the Travers necklace at the hands of a mystery thief known only as The Cat. The Joker Returns The Joker escapes from prison to continue his killing spree, and to steal the famed Cleopatra Necklace and Fire Ruby.