Supernatural (TV series)/Recap/S04/E16 On the Head of A Pin

Season 4, Episode 16:

On The Head Of A Pin
Someone found Lucifer's sword and is using it to kill angels. Castiel and Uriel have captured Alastair and ask Dean to use the torturing skills he learned in Hell to extract information from him so they can stop the murders. Sam is concerned Dean can't handle the job but Dean agrees to do it.

Tropes

 * Action Girl: Anna
 * Big Damn Heroes: "Maybe. Maybe not. But there's still me."
 * Cold-Blooded Torture: A rare example where the hero's the torturer.
 * Crowning Moment of Awesome: "You can't win, . I still serve God."
 * Hannibal Lecture: Alistair, which is kind of awesome (if creepy as hell) because he's being tortured at the time.
 * Made of Iron:  goes through a brick wall, gets up and irritably brushes bits of masonry off himself.
 * No-Holds-Barred Beatdown:  beats Dean into needing to be hospitalized.
 * Punched Across the Room: When the combatants are super-strong, this happens.
 * The Mole: Turns out?  is working for Lucifer. Granted he was a jerk, but we thought his heart was in the right place. It's not quite a Face Heel Turn, since he's been doing bad things all along.
 * We Can Rule Together: Or rather, we can help the bad guy together.