Quote from Captain Stottlemeyer in Mr. Monk's 100th Case
Captain Stottlemeyer: I didn't tell the press about the missing lipstick. I always hold back on a couple of key details so down the road if we do get a confession, we know if it's genuine. Lieutenant Disher: He does it a lot. You do it a lot, but you don't always do it, though. Captain Stottlemeyer: Yes, I do. I always do it. I just don't always tell him.