Nathan Fillion Richard Castle Actor Stana Katic NYPD Captain Kate Beckett Actor Susan Sullivan Martha Rodgers Actor Molly C. Quinn Alexis Castle Actor Penny Johnson Capt. Victoria Gates Actor Tamala Jones Lanie Parish Actor Jon Huertas NYPD Detective Javier Esposito Actor Seamus Dever NYPD Detective Kevin Ryan Actor Tahmoh Penikett Guest Star Judith Scott Guest Star Geoff Pierson Guest Star Onahoua Rodriguez Guest Star Lobo Sebastian Guest Star Sal Lopez Guest Star Riccardo LeBron Guest Star Andrew W. Marlowe Executive Producer, Writer Rob Bowman Executive Producer, Director Laurie Zaks Executive Producer David Amann Executive Producer Terri Miller Writer