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Castle's novel "Heat Wave" is being turned into a movie, and the Hollywood hottie cast as the movie's lead shows up at Beckett's invitation to better understand the character she's going to play. As our threesome investigates the murder of a high-class matchmaker, Natalie goes to extremes in the name of "character research," transforming herself into the spitting image of Beckett -- much to Castle's delight and Beckett's dismay.
The episode opens with Castle watching an audition piece by actress Natalie Rhodes for the part of Nikki Heat, a character based on his book “Heat Wave”. He tells Alexis that he doesn’t think that she is good for the part and Alexis disagrees, saying that she gets into the part really well. Martha says that Natalie did an amazing job in her other movies. Castle gets worked up and Beckett calls. Alexis says that a murder will do him some good. Castle arrives on scene and Ryan shows Castle an engagement ring. Castle teases him, pretending that Ryan is proposing to him. Ryan states that he is going to propose to his girlfriend. Castle asks him how and tells him that it has to be extravagant. Beckett comes over and says that it is not the way to do it...Read the full recap