When a timid accountant accidentally runs afoul of the Joker, he promises the Joker anything if the villain will only let him go.

The Joker infiltrates the birthday party of Mayor Hill's son in order to plant a bomb.

The Joker employs a lethal mind-altering laughing gas to transform the citizens of Gotham into total fools.

The Scarecrow uses a fear chemical triggered by adrenaline on Gotham's greatest athletes, then bets against them to reap the winnings.

Dr. Hugo Strange's invention, a machine that reads people's thoughts, leads him to discover that Bruce is Batman.

While hiding from the police, Batman's deadliest enemies exchange stories about their mutual nemesis--Batman.

The Joker kidnaps three prominent citizens during Christmas and challenges Batman to find him before midnight.

When a billionaire builds a casino called the Joker's Wild, the Joker breaks out of Arkham Asylum to destroy it.

The Joker becomes enraged when the Gotham copyright office rejects his demand for a copyright for his grinning Joker fish.

Harley Quinn has broken off with the Joker and teams up with Poison Ivy. Together they wreck havoc on Gotham and now Joker wants a piece of the action.

Sidney Debris, a small-time mobster, earns the hatred of all of Batman's enemies when he claims to have accidentally killed Batman during a brawl.

All of Batman's enemies team together to put Batman on trial and send him to Arkham Asylum.

Harley Quinn agrees to help Batman and Robin find the location of a stolen atomic bomb placed somewhere in Gotham by the Joker.

Batman and Robin investigate a string of crimes committed by a group of famous comedians brainwashed by the Joker.