Supernatural (TV series)/Recap/S03/E04 Sin City

Season 3, Episode 4:

Sin City
Sam and Dean investigate a once-reputable town whose citizens have turned to drinking and gambling. They search for demonic activity, but find out that this time it's the humans who are really corrupt.

Tropes

 * Dark Is Not Evil: played with. The demon Dean gets trapped with claims she just wants to carry out her life the same as anyone, and she has some valid points about the human race... but then again, she could be lying.
 * Not So Different
 * Together in Death