Season 4, Episode 21
When The Levee BreaksWritten by Sera Gamble.Directed by Robert Singer.Air Date: May 7, 2009.Dean and Bobby lock Sam in Bobby's panic room so he can detox from the demon blood. However, as Bobby sees more seals are being broken, he tells Dean they should let Sam out to help them fight the impending Apocalypse. Dean disagrees and goes to Castiel for help. Dean confronts Castiel, who says he should serve God in order to save Sam. Dean accepts. Meanwhile, Sam escaped from the panic room (with Castiel's help) and has met up with Ruby. After giving Sam a dose of her blood, Ruby reveals the reason she's been incognito for the past few weeks. She has been tracking down Lilith, and has found one who she calls Lilith's "personal chef". Cut to two nurses in a maternity ward discussing another nurse who stole two babies. One of the nurses' eyes turn black, and she remarks that the babies look delicious, answering the question of what Lilith eats. Later, Dean tracks Sam to the motel he is staying at. Sam and Dean have a blowout confrontation.
Body countFor this episode = Everybody Lives.For the series so far = At least 311 humans (of which 5 were witches), 28 ghosts, 26 demons, 10 vampires, 6 changelings, 3 gods, 3 shapeshifters, 3 zombies, 2 angels, 2 ghouls, 2 werewolves, 2 dogs, 1 crocotta, 1 djinn, 1 rakshasa, 1 rawhead, 1 reaper, 1 rugaru, 1 shtriga, 1 siren, and 1 wendigo.
- Cold Turkey: Dean and Bobby lock Sam in the panic room to break him of his demon blood addiction.
- Eats Babies: Lilith.
- Ironic Echo: Dean's last lines to Sam in the episode are just like what John said to Sam before the latter left for college.
- It's Quiet... Too Quiet: When Sam stops screaming, Dean and Bobby realize something's wrong.
- Like a Son to Me: Sam is like a son to Bobby.
- Missed Him by That Much: Dean steps off an elevator into a hotel corridor just as Sam walks out.
- More Hero Than Thou: What Sam and Dean's argument essentially boils down to.
- Put on a Bus: Castiel finally arrests Anna even after she saved his life.
- Tainted Veins: One of Sam's hallucinations.
- What the Hell, Hero?: Anna to Cas after he lets Sam free.
- You Don't Want to Know: Ruby say that to Sam about what the demon girl is cooking.