After a serial killer imitates the plots of his novels, successful mystery novelist Richard "Rick" Castle receives permission from the Mayor of New York City to tag along with an NYPD homicide investigation team for research purposes.
Nathan Fillion
as Richard Castle
Stana Katic
as Kate Beckett
Molly C. Quinn
as Alexis Castle
Jon Huertas
as Javier Esposito
Seamus Dever
as Kevin Ryan
Susan Sullivan
as Martha Rodgers
Tamala Jones
as Lanie Parish
Toks Olagundoye
as Hayley Shipton
