Theory 1: The briefcase in Pulp contains the eternal soul of Marcelus Wallace, sold to the devil then stolen back. Note the Band-Aid on the back of his neck, according to folk-lore this is the point where the Devil removes a persons soul. Refute 1: I'm so sick of hearing about the briefcase. One thing you forgot to mention in your wallace's eternal soul theory is that the combination on the damn thing is 666. But even so, I side with a comment I saw somewhere else on this site that says it's whatever you want it to be. It's like the age-old horror movie technique of leaving the scariest parts to your imagination because they're even scarier that way. Tarantino took that idea and flipped it on its head with the briefcase -- it's the most beautiful thing imaginable, literally! Speculation 1: I saw an interview with Tarantino himself on TV and apparently the band-aid on the back of Marcelus Wallace's neck was to cover up a scar - nothing to do with his soul, but an interesting theory nonetheless But, being slightly left-brained - I tend to like Theory 1.