Castle/The Final Frontier

The Final Frontier
Season 5, Episode 6
Airdate	November 5, 2012
Written by	Kate Sargeant
Directed by	Jonathan Frakes
Stream
← 5x05 Probable Cause	5x07 → Swan Song
Castle — Season Five

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The Final Frontier is the sixth episode of the fifth season of Castle, and the eighty-seventh episode overall.

Starring: Nathan Fillion (Richard Castle), Stana Katic (Detective Kate Beckett), Susan Sullivan (Martha Rodgers) (credit only), Jon Huertas (Detective Javier Esposito), Seamus Dever (Detective Kevin Ryan), Tamala Jones (M.E. Lanie Parish) (credit only), Molly Quinn (Alexis Castle), Penny Johnson Jerald (Captain Victoria Gates) (credit only)

Guest Starring: Ed Quinn (Gabriel Winters), Christina Moore (Stephanie Frye), Armin Shimerman (Benjamin Donnelly), Arye Gross (M.E. Sidney Perlmutter), Erin Way (Audrey O'Neill), John Bobek (Davis Hawthorne), Chris L. McKenna (Simon Westport)

Co-Starring: Juan Monsalvez (Commander Walsh), Melinda Cohen (Lt. Chloe Preston), P.J. Ochlan (Lt. Shane), Jeff Galfer (Henry Barnett), Anna Bowen (Officer Tate), John Gloria (Bartender), Kari Ann Klinkenborg (Pretty Woman), Brian Treitler (Friend), Channing Nichols (Teenage Girl)