Watch Monk Streaming Now on Peacock: pck.tv/3w4fAPB Monk's (Tony Shalhoub) obsession with cleanliness, even on Christmas morning, becomes the key to solving the mystery of who tried poisoning Captain Stottlemeyer (Ted Levine) at the police station's Christmas party. A missized envelope reveals the truth, and Monk and the team confront the killer, exposing each layer of her plot to take out her ex-boyfriend. (Season 4 Episode 9). Synopsis: A mystery/comedy series about Adrian Monk, an obsessive-compulsive detective. Monk suffers from a psychological disorder that cost him his position as a legendary homicide detective on the San Francisco police force. Due to the tragic unsolved murder of his wife, Monk has developed an abnormal fear of germs, heights, crowds and virtually everything else -- which provides an unusual challenge to solving crimes but possibly enhances his brilliant insight to the crimes, making him an invaluable consultant to the police force which he once serv...