Se7en director David Fincher has revealed what was actually in the box when they were filming the ending of the iconic thriller movie. The story of Se7en follows two detectives, David Mills and William Sommerset, who are tracking a serial killer who is targeting people that he believes represent one of the seven deadly sins. The shocking ending of Se7en shocked moviegoers when the film was released in 1995, and has stayed with people ever since. The cast includes Brad Pitt, Morgan Freeman, Gwyneth Paltrow, and Kevin Spacey.

https://screenrant.com/seven-movie-ending-box-inside-explained-gweneth-paltrow-head-david-fincher/