Nathan Fillion Richard Castle Actor Stana Katic NYPD Captain Kate Beckett Actor Susan Sullivan Martha Rodgers Actor Molly C. Quinn Alexis Castle Actor Ruben Santiago-Hudson Captain Roy Montgomery Actor Tamala Jones Lanie Parish Actor Jon Huertas NYPD Detective Javier Esposito Actor Seamus Dever NYPD Detective Kevin Ryan Actor Marc Blucas Jeremy Preswick Guest Star Anne Dudek Emma Carnes Guest Star Carlo Rota Bahir Harun Guest Star Dahlia Salem Tory Westchester Guest Star Marisa Ramirez Angelica Fink Guest Star Phil LaMarr Dr. Holloway Guest Star J.P. Pitoc Darius Langley Guest Star Andrew W. Marlowe Executive Producer Armyan Bernstein Executive Producer Barry Schindel Executive Producer Rob Bowman Executive Producer Laurie Zaks Executive Producer David Grae Writer John Terlesky Director