In the 1995 thriller's harrowing finale, Brad Pitt 's Detective Mills realises that serial killer John Doe (Kevin Spacey) has delivered him his wife's (Gwyneth Paltrow) head in a box after Detective Somerset (Morgan Freeman) opens it.

Well, what was in the box? In honor of its 30th anniversary, David Fincher is finally revealing what he put in the box at the end of Se7en.

"I may not be interested in Y and Z, but if I can use it for the sake of X — all tools, if they do what they say they're going to do, are good tools," the director says.

Director David Fincher recently clarified a long-standing question about the contents of “the box” in Se7en while discussing the film’s 30th anniversary. Speaking in an interview, Fincher directly addressed rumors of a prosthetic head being used in the iconic scene.