Castle 2009 | TV Show

Cast & Crew  |  Episode Guide

A murder-mystery writer and a detective team up to catch a serial killer who is reenacting murders from his books. Once the case is solved, the unlikely pair continue to work together to probe New York City's most unusual homicides.

Premiered: March 9, 2009

Rating: TV-PG

User Rating:4.75 out of 5 (5,834 ratings)

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Season 4, Episode 21 Headhunters

First Aired: April 16, 2012

When things get tense with Beckett, Castle decides to team up with a new partner: a tough gang-unit detective who exposes him to a seedier side of police business and puts him in risky situations.

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Previous Episode

The Limey

Season 4, Episode 20

April 2, 2012

Next Episode

Undead Again

Season 4, Episode 22

April 30, 2012

Guest Cast

Michael Dorn Dr. Carter Burke
Michael McGrady Brian Reilly
Adam Baldwin Det. Ethan Slaughter

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