Castle

Headhunters

With tensions rising between Castle and Beckett, Castle finds himself a new partner -- Detective Ethan Slaughter (guest star Adam Baldwin, "Firefly"),a tough and colorful cop from the city's gang unit. But Castle gets more than he bargained for when Slaughter shows him a grittier side of police work that puts Castle in the line of fire like never before
Aired: Apr 16, 2012 Genre: Drama CrimeCasts: Nathan Fillion Stana Katic Molly C. Quinn Jon Huertas Seamus Dever Susan Sullivan Tamala Jones Penny Johnson JeraldCreated By: Andrew W. MarloweProducers: Alexi Hawley John TerleskyRating: 8.1 Country: United States of America Production: Beacon Pictures, Experimental Pictures, ABC Studios, The Barry Schindel Company, MilMar Pictures