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 Arye Gross Guest Star Kristoffer Polaha Guest Star Rob Brownstein Guest Star Adam Korson Guest Star Dagney Kerr Guest Star Minni Jo Mazzola Guest Star Terence Paul Winter Executive Producer Alexi Hawley Executive Producer Rob Bowman Executive Producer Rob Hanning Executive Producer Armyan Bernstein Executive Producer Christine Roum Writer Jeff Bleckner Director