Quote from Adrian Monk in Mr. Monk and the Very, Very Old Man
Captain Stottlemeyer: All right. The bag's empty. Come on. I need you in there. Adrian Monk: You don't need me inside. The killer was a stranger. He'd never-never been in this house before. Lieutenant Disher: You can tell that from here? Adrian Monk: He broke three panels in that door. Captain Stottlemeyer: Yeah, right. Then he reached in and he opened the lock. What does that prove? Adrian Monk: He broke three panels. He wasn't sure where the lock was. Captain Stottlemeyer: We're lookin' for a stranger. Pass it on.