Earlier this week, Amazon revealed the box art for Batman: The Killing Joke, but it also listed another important piece of information — the runtime!

Batman: The Killing Joke will be 72 minutes long, which puts it on par with the other DC animated movies. In order to achieve this length, brand new content was added to the classic graphic novel’s story. The movie version will include a prologue that focuses on Barbara Gordon/Batgirl, who has a pivotal role later on.

Batman: The Killing Joke is available for pre-order on Amazon now. Check out the trailer one more time below.