Which books were the 2020 Oscar adapted screenplay nominees based on?

Only three of the five screenplays were based on traditional books this year, with the remaining contenders being adapted from a comic and an unproduced play.

Joker

Batman: The Killing Joke by Alan Moore (author) and Brian Bolland (illustrator)

While Todd Phillips and Scott Silver’s basic premise for the Joker was loosely inspired by a Batman comic called The Killing Joke, which depicted the Joker as a failed stand-up comedian, the pair also acknowledge their script didn’t rely much on one particular comic book to create the screenplay for the film. ” We kind of picked and chose what we liked from the 80-year canon of Joker,” Phillips said to journalists at an early Joker screening in Los Angeles. 

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