Directed by Sam Liu and featuring the voices of Kevin Conroy, Mark Hamill, Tara Strong and Ray Wise, Batman: The Killing Joke follows the Joker after his escape from Arkham Asylum as he targets Commissioner Gordon in an attempt to prove that one terrible day can drive anyone insane. The film also explores the Joker’s possible origin and includes an expanded prologue centred on Barbara Gordon as Batgirl. Based on Alan Moore and Brian Bolland’s graphic novel, it focuses on the psychological conflict between Batman and the Joker.

Från IMDB:
As Batman hunts for the escaped Joker, the Clown Prince of Crime attacks the Gordon family to prove a diabolical point mirroring his own fall into madness.