Nathan Fillion Richard Castle Actor Stana Katic NYPD Captain Kate Beckett Actor Susan Sullivan Martha Rodgers Actor Jon Huertas NYPD Detective Javier Esposito Actor Tamala Jones Lanie Parish Actor Seamus Dever NYPD Detective Kevin Ryan Actor Molly C. Quinn Alexis Castle Actor Ruben Santiago-Hudson Captain Roy Montgomery Actor Bruno Campos Calvin Creason Guest Star Joshua LeBar Jason Bollinger Guest Star Lisa Waltz Laurie Horn Guest Star Michael Reilly Burke Frank Nesbit Guest Star Jonathan Banks Bruce Kirby Guest Star Alicia Ziegler Tiffany Guest Star Andrew W. Marlowe Executive Producer, Writer Armyan Bernstein Executive Producer Barry Schindel Executive Producer Rob Bowman Executive Producer, Director Laurie Zaks Executive Producer