Nathan Fillion Richard Castle Actor Stana Katic NYPD Captain Kate Beckett Actor Tamala Jones Lanie Parish Actor Jon Huertas NYPD Detective Javier Esposito Actor Seamus Dever NYPD Detective Kevin Ryan Actor Penny Johnson Capt. Victoria Gates Actor Molly C. Quinn Alexis Castle Actor Susan Sullivan Martha Rodgers Actor Maya Stojan Guest Star Ryan Sands Guest Star Jon Lindstrom Guest Star Don Stark Guest Star Matt Letscher Guest Star Andrew W. Marlowe Executive Producer Rob Bowman Executive Producer, Director Laurie Zaks Executive Producer David Amann Executive Producer, Writer