The contents of the briefcase in Pulp Fiction have been the subject of much speculation and fan theories. According to director Quentin Tarantino, the contents of the briefcase are "whatever you want". However, some theories suggest that the briefcase contains:

• Innermost desires: One theory suggests that the briefcase presents whoever is looking into it with their innermost desire, via some religious magic. This theory is supported by the fact that the briefcase glows when opened, has a 666 combination, and is the primary plot mover that pushes Jules to redeem himself.

• Diamonds: The original script called for the briefcase to contain diamonds, but Tarantino decided against this since he had just used diamonds in a previous film.

• Elvis Presleys golden suit: One theory suggests that the briefcase contains Elvis Presleys golden suit, which was also featured in Tarantinos film True Romance.

• Printing plates for American paper money: Another theory suggests that the briefcase contains printing plates for American paper money, which would explain the glowing shine that is always present when the briefcase is opened.

Ultimately, the contents of the briefcase are left up to interpretation, and Tarantino has stated that he intentionally left it ambiguous.