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 Dean Norris Guest Star Barry Livingston Guest Star Darren Pettie Guest Star Jonah Wharton Guest Star Noa Dori Guest Star Ty Upshaw Guest Star Andrew W. Marlowe Executive Producer Rob Bowman Executive Producer Laurie Zaks Executive Producer David Amann Executive Producer Terence Paul Winter Writer Bryan Spicer Director