S4 E21
Status
Ended
Network
ABC (US)
SEASON
VIEW ALL EPISODE

Season 4  "Headhunters"  4x21

Aired 12 years ago - Apr 16, 2012

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.

Mouse over thumbnail for slideshow

Or scroll and see one by one:

Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 2
- No. - No?
#2
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 3 #3 Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 4
Someone pumped three rounds into him.
#4
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 5
Never thought he would.
#5
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 6 #6 Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 7 #7 Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 8
Woman like that, you storm the beaches
#8
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 9 #9 Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 10
I don't--I don't got him. I don't got him.
#10
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 11
and the rush of the gangster squad--
#11
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 12
You what? Are you kidding me?
#12
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 13 #13 Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 14 #14 Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 15
Cappuccino?
#15
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 16
by cutting the heads off of Westie enemies.
#16
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 17 #17 Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 18 #18 Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 19
You know who I'm mackin' on is this hot new redhead
#19
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 20 #20 Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 21 #21 Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 22
We were talking. We weren't just moving our...
#22
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 23
Look at 'em laughing it up.
#23
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 24
We both know you killed that Westie kid last night.
#24
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 25 #25 Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 26
Detective Ryan.
#26
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 27
You know, I'd love to, uh, celebrate, but--
#27
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 28 #28 Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 29 #29 Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 30
Guy's nothing but a two-bit punk.
#30
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 31 #31 Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 32
No. I'm afraid not.
#32
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 33 #33 Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 34
Come on, that? That wasn't bad.
#34
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 35
Don't you listen to those whiners, Sherlock.
#35
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 36
Well, guess what. I'm not sayin' nothing!
#36
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 37 #37 Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 38
Yes. Victory.
#38
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 39 #39 Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 40 #40 Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 41
Never thought you'd punk out on me like this.
#41
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 42
Even if I wanted to help,
#42
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 43 #43 Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 44
and the Jamaican heads to start up a gang war?
#44
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 45
that stretches all the way back to the Rio Grande.
#45
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 46
We got about an hour to figure out who really killed Glitch
#46
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 47
when can just hang a right and hop a train outta here?
#47
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 48
Yeah.
#48
Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 49 #49 Recap of Castle (2009) Season 4 Episode 21 (S04E21) - 50 #50