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 Oliver Muirhead Guest Star Billy Ray Gallion Guest Star David Hoffman Guest Star Bree Williamson Guest Star Alyn Smyth Guest Star Aaron McCusker Guest Star Senta Burke Guest Star Terence Paul Winter Executive Producer Alexi Hawley Executive Producer Rob Bowman Executive Producer Rob Hanning Executive Producer Armyan Bernstein Executive Producer Robert Bella Writer Jessica Yu Director