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 Lindsay Price Guest Star Sheldon Bailey Guest Star Andrea Roth Guest Star Matthew Jaeger Guest Star Brynn Thayer Guest Star Terence Paul Winter Executive Producer Alexi Hawley Executive Producer Rob Bowman Executive Producer Rob Hanning Executive Producer, Writer Armyan Bernstein Executive Producer John Terlesky Director