Dirty Lines
S03E24 The Joker's Flying Saucer
The Joker returns to Gotham City with a nefarious plan for global takeover. He spreads false rumors about an extraterrestrial invasion while seeking Beryllium metal to construct a genuine flying saucer. Batman quickly catches onto his plot and dispatches Alfred to investigate a hidden supply of the metal. However, Alfred is mistaken for a mad scientist by the Joker and is captured alongside Batgirl. As the Dynamic Duo rush to the rescue, a bomb planted by one of the Joker's goons detonates, rendering them unconscious and isolating the Batcave from the outside world.
Season 3 Episodes
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Enter Batgirl, Exit Penguin
Ring Around the Riddler
The Wail of the Siren
The Sport of Penguins
A Horse of Another Color
The Unkindest Tut of All
Louie the Lilac
The Ogg and I
How to Hatch a Dinosaur
Surf's Up! Joker's Under!
The Londinium Larcenies
The Foggiest Notion
The Bloody Tower
Catwoman's Dressed to Kill
The Ogg Couple
The Funny Feline Felonies
The Joke's on Catwoman
Louie's Lethal Lilac Time
Nora Clavicle and the Ladies' Crime Club
Penguin's Clean Sweep
The Great Escape
The Great Train Robbery
I'll Be a Mummy's Uncle
The Joker's Flying Saucer
The Entrancing Dr. Cassandra
Minerva, Mayhem and Millionaires