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 Coby Ryan McLaughlin Guest Star Jack Coleman Guest Star Daisy Betts Guest Star Ann Cusack Guest Star Jacqueline Obradors Guest Star Alexi Hawley Writer, Executive Producer Terence Paul Winter Writer, Executive Producer Paul Holahan Director Rob Bowman Executive Producer Rob Hanning Executive Producer Armyan Bernstein Executive Producer