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 Molly C. Quinn Alexis Castle Actor Susan Sullivan Martha Rodgers Actor Toks Olagundoye Hayley Actor Sunkrish Bala Guest Star Kristoffer Polaha Guest Star Jed Rees Guest Star Gerald McRaney Guest Star Michelle Alegria Guest Star Michael Teh Guest Star Terence Paul Winter Executive Producer, Writer Alexi Hawley Executive Producer, Writer Rob Bowman Executive Producer, Director Rob Hanning Executive Producer Armyan Bernstein Executive Producer