Dr. Cassandra and her husband Cabala are behind a string of invisible robberies, thanks to their camouflage pills. When Batman, Robin, and Batgirl attempt to stop their next theft, the crooks turn them into 2-dimensional figures with their ray gun. Dr. Cassandra then begins work on her final plan - releasing all the super criminals from prison to join her invisible force. Written by
Did You Know?
In this penultimate Bat-adventure, Dr. Cassandra releases six Arch-Criminals from Gotham State prison: The Riddler, The Penguin, The Joker, Catwoman, King Tut and Egghead. However none of them are played by the usual guest actors. For one thing it would be too expensive to feature them all at the same time. Note that their faces are never clearly seen, they have no lines (other than the Riddler's giggle and Penguin's squawk reused from earlier appearances) and Catwoman resembles the Julie Newmar
version instead of season three's Eartha Kitt
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Holy unrefillable prescriptions!