Knowing Monk's phobias regarding disease, Mandy had the actor playing Derek pose as someone with leprosy, or Hansen's disease, so Monk wouldn't even look at him long enough to realize the farce. The ruse works, and Mandy's life of luxury continues. Before the official ruling, Mandy shoots and kills the actor, who was playing his piano.
After the murder, Mandy later tries to get rid of the body by placing it in a hot air balloon, with barbells inside so it would fall into the ocean. When Monk and Natalie are caught inside the balloon, the evil Mandy shoots at them. Randy Disher later appears and arrests Mandy for the murders of her husband and the imposter.
- Sarah Joy Brown is best known for playing Kaitlin Star, one of the titular VR Troopers, though she portrayed Kaitlin as a villainess in Season One's "No One's Friend," and played an evil double of Kaitlin in Season Two's "Kaitlin Through the Looking Glass," a two part episode.
- Mandy Bronson is the only one-shot female villain from the fifth season of Monk.