Quote from Sharona in Mr. Monk Goes to the Asylum
Dr. Lancaster: If anything, his behavior has deteriorated. We may have to keep him here longer than we thought. Sharona: Well, how much longer? Dr. Lancaster: That's hard to say. It could be a month. Sharona: A month? Dr. Lancaster: It could be as long as a year. Adrian is bipolar, he's delusional and he's paranoid.He sees murder mysteries everywhere he turns. In fact, he's befriended another patient, and the two of them are trying to prove that Santa Claus really does exist. Sharona: Santa Claus? Dr. Lancaster: Yeah, they went out on the roof collecting evidence. It would be funny if it wasn't so dysfunctional.