BATMAN (1940) #184

The Caped Crusaders mysteriously disappear for two weeks, and when they return, they have no memory of where they have been. « Mystery of the Missing Manhunters! » After being missing for 13 days, Batman and Robin use a hypnotic device to revive their memories to remember that they were involved in trying to bust up the criminal organization called « Robbery Incorporated. » After hiding out criminal Slippery Sam after he worked as an informant, Batman and Robin spent the next 13 days busting up the crooks. However, when they returned to the Batcave and were about to answer another call, they were zapped by a trap rigged to the Batmobile by Slippery Sam.…