A: Thank you for coming, officer. B: What seems to be the problem? A: I was in school all day and came home to a burglarized apartment. B: Was the door locked when you left? A: The door was still locked when I came home, so maybe they came in through a window. B: Do you live here alone? A: I have a roommate, but she is still at school. B: Have you seen anyone suspicious in the neighborhood? A: No, nothing unusual. B: Well, I am going to check the windows and look for fingerprints. I want you to figure out what is missing.