In Pulp Fiction, why did Marvin open the door for Vincent and Jules?

Answer 1

marvin was working with them. on the way over they talk about having a guy on the inside. that was marvin. he was only pretending to be friends with the guys in the apartment.

as far as the other guys, they thought they were hid and that there was no way marcellus's men could find them. so that's why they didn't care about the door being open. they don't know marvin had ratted them out.

Answer 2

Because they knocked on the door. What do you do when someone knocks on your door? Unless they're Baptist women, Mormon Missionaries or relatives I don't want to see, I answer the door.

Answer 3

At the beginning of Pulp Fiction, Marvin opens the door for Vincent and Jules. Why did Marvin do this? Didn't he know that they were hitmen about the kill everyone? Why not just keep the door locked and have everyone remain silent or have them hide inside?