Castle and Beckett investigate the murder of the owner of a historic magic shop found dead in a Houdini’s water torture tank.

When Castle’s novel ”Heat Wave” becomes a movie, actress Natalie Rhodes accepts Beckett’s invitation to visit and learn about the character she will play; Natalie observes Castle and Beckett’s investigation…

With the help of his old nemesis Alexei Volkoff, Chuck and the team hunt down a deadly weapon, The Norseman. In a pre-wedding surprise, Sarah springs a pre-nup on Chuck.