Nathan Fillion (Richard Castle), Stana Katic (Kate Beckett), Michael Trucco (Tom Demming). Plot Summary

The murder case is overshadowed by the growing tension between Castle and Beckett. Beckett's relationship with Detective Tom Demming creates significant jealousy and friction.

In a heartbreaking conclusion, Beckett breaks up with Demming to tell Castle she wants to be with him. However, Castle arrives with his ex-wife (and publisher), Gina, announcing they are heading to the Hamptons for the summer to finish his book. Key Themes

Castle and Beckett investigate the death of a spy, but Castle's jealousy of Beckett's new partner complicates their work. A Deadly Game | Castle Wiki | Fandom