STAGE TUBE: Sneak Peek - Season Finale of ABC's CASTLE Airing Tonight

On the Season Finale of ABC's CASTLE entitled "Always", when the murder of an Army veteran puts Beckett on the trail of the man who shot her, Castle must decide how much he's willing to sacrifice to keep her safe. As secrets are revealed and feelings are put on the table, the lives of the detectives at the 12th Precinct may never be the same. The episode airs tonight, MONDAY, MAY 7 (10:01-11:00 p.m., ET), on the ABC Television Network.

CASTLE stars Nathan Fillion as Richard Castle, Stana Katic as NYPD Detective Kate Beckett, Susan Sullivan as Martha Rodgers, Molly Quinn as Alexis Castle, Penny Johnson Jerald as NYPD Captain Victoria Gates, TAMALA JONES as Medical Examiner Lanie Parish, Jon Huertas as NYPD Detective Javier Esposito, and Seamus Dever as NYPD Detective Kevin Ryan.

Guest Cast: Tahmoh Penikett as Cole Maddox, Judith Scott as Evelyn Montgomery.

"Always" was written by Terri Edda Miller & Andrew Marlowe and directed by Rob Bowman.

Get a sneak peek at the season finale below!