Watch Castle Season 4 Episode 21 Online — Headhunters | Bobina

Castle — Season 4, episode 21 watch online

  • TV Series: Castle
  • Seasons: Season 4
  • Episode 21: «Headhunters»
  • Air date: April 16, 2012
  • Running time: 60 min

Castle, season 4 episode 21 «Headhunters»: air date April 16, 2012. Episode overview, season trailer and the cast of Castle.

With tensions rising between Castle and Beckett, Castle finds himself a new partner -- Detective Ethan Slaughter, 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.

Episodes — Season 4

  1. 1 Episode 1 «Rise» September 19, 2011
  2. 2 Episode 2 «Heroes & Villains» September 26, 2011
  3. 3 Episode 3 «Head Case» October 3, 2011
  4. 4 Episode 4 «Kick the Ballistics» October 10, 2011
  5. 5 Episode 5 «Eye of the Beholder» October 17, 2011
  6. 6 Episode 6 «Demons» October 24, 2011
  7. 7 Episode 7 «Cops & Robbers» October 31, 2011
  8. 8 Episode 8 «Heartbreak Hotel» November 7, 2011
  9. 9 Episode 9 «Kill Shot» November 21, 2011
  10. 10 Episode 10 «Cuffed» December 5, 2011
  11. 11 Episode 11 «Till Death Do Us Part» January 9, 2012
  12. 12 Episode 12 «Dial M for Mayor» January 16, 2012
  13. 13 Episode 13 «An Embarrassment of Bitches» January 23, 2012
  14. 14 Episode 14 «The Blue Butterfly» February 6, 2012
  15. 15 Episode 15 «Pandora» February 13, 2012
  16. 16 Episode 16 «Linchpin» February 20, 2012
  17. 17 Episode 17 «Once Upon a Crime» February 27, 2012
  18. 18 Episode 18 «A Dance with Death» March 19, 2012
  19. 19 Episode 19 «47 Seconds» March 26, 2012
  20. 20 Episode 20 «The Limey» April 2, 2012
  21. 21 Episode 21 «Headhunters» April 16, 2012
  22. 22 Episode 22 «Undead Again» April 30, 2012
  23. 23 Episode 23 «Always» May 7, 2012