- as Adrian Monk
- as Sharona Fleming
- as Rita Bronwyn
- as Benjy Fleming
- as John Fenimore
- as Shawn
- as ... (Shown person)
- as Tony Landis
- as Mrs. Garcia
- as Mitzi
- as Maria
- as Gabriel
- as Groundskeeper
- as Nicole Young
- as Lt. Randall Disher
- as Irene Fenimore
- as Older kid
- as Teenage girl
- as Captain Leland Stottlemeyer
- as Lupe
- as Dr. Charles Kroger
- as M.C.
- as Hotel Security Officer
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Watch "Monk > Mr. Monk Takes a Vacation":