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 Jonny Cruz Guest Star Andrew Elvis Miller Guest Star Emily Goss Guest Star Jewel Staite Guest Star Juliana Dever Guest Star Marco Zunino Guest Star Gabriel Salvador Guest Star Claudio Pinto 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 Hanelle M. Culpepper Director