The final trailer for The Death of Superman Lives: What Happened? has hit the Internet.

The Death of Superman Lives follows documentarian Jon Schnepp as he unravels the mystery behind Tim Burton’s failed Superman Lives film. As most know, Burton was set to direct the Superman film in the late 1990s with Nicholas Cage as Superman. But just before cameras started rolling, the film came to a sudden halt. By speaking to Burton, and the film’s production crew, Schnepp pieces together what the film would have looked like, while also discovering why it collapsed at the 11th hour.

The Death of Superman Lives: What Happened? hits select theaters on May 1st, and theaters everywhere on July 9th.