Batman #54

THE TREASURE HUNTER! A criminal starts stealing valuable collectors items from wealthy people in Gotham City until Batman and Robin put and end to the crime spree. THE DOOR WITHOUT A KEY! Bruce and Dick get lost in Florida and come across an ancient castle. The elder owner of the place allows them inside and they notice a giant door with no means to open it. When the elder man enters the door, Bruce and Dick follow as Batman and Robin and find a secret place lost in time. Here, the Dynamic Duo find a long lost fugitive and they capture the criminal. However, when they return to the place on the Batplane, they can't find neither the castle or the secret place. THE AMAZING MASQUERADE! A criminal murders a famous architect and takes his place thanks to his uncanny resemblance. Impersonating the architect, the criminal builds houses with a secret entrance for his gang to break inside and steal from the places. Bruce Wayne realizes that the architect is another person and he captures the criminal as Batman.