Mr. Monk Goes to the Asylum - S1-E6
Question: Why did Dr. Lancaster have to dress up as Santa when retrieving the gun he used in the murder four years ago? And what was the purpose of Manny being given the room considering if he told people that he saw Santa everybody would just shrug off his claim?
Answer: Dr. Lancaster gave Manny the room because Manny believed Santa was real. Thus, by dressing as Santa, Manny thinks he's seeing the real Santa and not someone in a costume. If any other patients were given the room, then they would have simply said they saw a man dressed as Santa on the roof. Additionally, Dr. Lancaster had to retrieve the gun from the chimney and dressed as Santa, Manny would naturally think Santa was climbing down their chimney to deliver presents. And then when Manny says he saw Santa climbing down the chimney, everyone would think he's making up a story and that there was nobody on the roof.
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