Batman Season 2 - Episode 39 <Top 50 Validated>

The villains trick Venus , the Joker’s former accomplice who was trying to reform, into believing the Penguin has also gone straight. They use her to try and find the location of the Batcave by hiding in the trunk of the Batmobile .

This was a rare instance of villains successfully entering the Batcave , though they failed to learn its secret location. Batman Season 2 - Episode 39

The Joker breaks the Penguin out of Gotham State Prison to help him complete his "Zodiac" themed crime spree. Their primary goal is to collect a $10 million ransom by threatening to turn Gotham City's water supply into jelly. The villains trick Venus , the Joker’s former

This episode features the first use of the "Batdrone," used to search Gotham for an unauthorized broadcast. The Joker breaks the Penguin out of Gotham

(in one of his earliest TV appearances) plays a delivery boy for the Penguin. Key Trivia

The story picks up from the previous episode's cliffhanger, with the having trapped Batman in chains and Robin inside a giant, lethal clam.