Hall of Infinite Doors

She readily agrees to have some photos taken of her. She collects her things, neatens up and goes with you downstairs to the photo studio. As you are getting off the elevator, you see the head of the photo studio getting on. You walk down the hallway with Candice to the studio and see a note stuck to the door. "Be back in two hours." The door is locked.

Candice looks at you. "Maybe I'll have to come back. Thanks for the interview, though."

As the mailboy, you know the keypad code, but haven't taken many pictures before.