Batman '66 #12
Marsha, Queen of Diamonds, holds all the cards! While Batman and Robin try to track her down for her latest crime, Marsha and her cohorts tunnel their way into the Batcave. She's been after the Bat Diamond for some time. Will she finally get it? Then find out what the Dynamic Duo must resort to when The Minstrel makes it impossible for them to get to the Batcave and their costumes.