“Batman: The Killing Joke” (**1/2 out of four) was an animated sequel involving The Dark Knight (voiced by Kevin Conroy) who hunts for the escaped Joker (voiced by Mark Hamill) especially after he viciously assaults Batgirl (voiced by Tara Strong) and engineers a diabolical plan to attack the Gordon family. Dazzling animation and the dialogue and story are stronger than you would expect. Batman and Batgirl have interesting characterizations and a new kind of relationship in this entry. Ironically, though, the story starts to sag once The Joker is introduced and later becomes campy and over-the-top. Still, a better-than-expected entry in the series and worth checking out for comic-book fanatics.