Catwoman traps Batman and exposes him to a radioactive gas that will allow her to identify him in his secret identity.

This episode features edited dialogue - in the show's syndicated run, as Catwoman and her henchmen pillage a jewelry exchange, it includes a line of narration, "The feline felon and her terrible tabbies indulge in an orgy of stealing." This was changed in subsequent prints to "a spree of stealing."

Bruce Wayne is captured by Penguin in the robbery of a valuable ruby. Unfortunately for Penguin, Catwoman is also after the ruby.