ABC has released the official synopsis for the November 5th episode of Castle, "The Final Frontier". Beckett and Castle take on a murder at a sci-fi convention. Star Trek: The Next Generation veteran Jonathon Frakes directs, while several other popular stars are scheduled to guest, including Armin Shimerman, Ed Quinn and Christina Moore.
- When a body is found at a sci-fi convention, Castle and Beckett are warped into the heart of fandom.
- A world of egotistic celebrities, diehard costumed fans and enough drama for two galaxies.