Quote from Adrian Monk in Mr. Monk Takes the Stand
Natalie: Hey, what are you doing? Adrian Monk: Oh, these are my old case files. I'm organizing them by date, and then cross-referencing them by name of the suspect. The yellow folders indicate multiple victims. Natalie: And what are you gonna do after Adrian Monk: I'm gonna burn them. Natalie: You can't quit, Mr. Monk. Adrian Monk: Already have.