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 Adam Baldwin Guest Star Michael McGrady Guest Star Michael Dorn Guest Star Rey Gallegos Guest Star Anna Zielinski Guest Star Christopher Rivera Guest Star Clifford McGhee Guest Star Andrew W. Marlowe Executive Producer Rob Bowman Executive Producer Laurie Zaks Executive Producer David Amann Executive Producer Alexi Hawley Writer John Terlesky Director