Based on the July 20, 2012 shooting in Aurora, Colorado, when a shooter opened fire on the audience of a midnight screening of The Dark Knight Rises (2012). 12 people were killed and around 70 others were injured.
Shot in 16 days.
The first cut was finished in 3 weeks.
While not entirely based upon the Dark Knight Rises shooting, it contains many references and undertones to the tragedy. The character of Jumper bears a strong resemblance to James Holmes, one supporting character dyes his hair orange like Holmes did, a news report of the shooting is shown briefly in one scene, two scenes depict characters wearing Batman masks, and the title of the film itself is a reference to the Dark Knight Rises