Kingston: Wait a minute. You mean, you think the thief was a woman?
Columbo: One of them.
Kingston: One of them?
Columbo: Well, there were too many pictures there for one person to carry, don't you think? And besides, the burglar alarm thing, you know, there's only one way to really beat that, is if you have somebody else from the inside open the door.
Kingston: I don't think I understand.
Columbo: You know what, that's the trouble. Neither do I.