Secret missions, shady pasts, aging actors looking for a comeback, and murder are the name of the game in this week’s Castle. Former Hollywood action movie star Lance Delorca (Morgan Benoit) is found murdered behind a movie theater; it’s up to Beckett (StanaKatic), Esposito (Jon Huertas), and Ryan (Seamus Dever) to figure out why. Of course, Castle (Nathan Fillion) wants in on this because he’s a huge fan of Delorca’s old “Hard Kill” movies.