BATMAN (1940) #403

Tommy Carma escapes from Arkham Asylum and discovers a mysterious cave…a cave with a giant penny and dinosaur… The former cop who was convinced that he was Batman (see Batman 402 ) escaped Arkham after killing two guards who he thought was Joker and Two-Face. He happened upon the Batcave, stole an outfit, and stole the car. The real Batman realized what was going on and tracked the impostor down. After a short fight, the true Batman won. ** Reprinted twice – one has no date on cover, other has DC Multi-pack after indica **