Cast of Castle

Nathan Fillion plays Richard Castle, a best-selling mystery novelist who assists the NYPD in solving crimes.

Stana Katic portrays Kate Beckett, a dedicated homicide detective in New York City.

Molly C. Quinn takes on the role of Alexis Castle, the intelligent and mature daughter of Richard Castle.

Jon Huertas plays Javier Esposito, a detective in the homicide division at the NYPD.

Seamus Dever is Kevin Ryan, another detective and partner to Javier Esposito.

Susan Sullivan appears as Martha Rodgers, Richard Castle's theatrical and spirited mother.

Ruben Santiago-Hudson portrays Roy Montgomery, the captain of the NYPD's homicide division.

Tamala Jones plays Lanie Parish, a forensic pathologist and close friend of Kate Beckett.

Toks Olagundoye takes on the role of Hayley Shipton, a private investigator and security specialist.

Penny Johnson Jerald plays Victoria Gates, the captain who succeeds Roy Montgomery at the NYPD.