Supernatural (TV series)/Recap/S02/E07 The Usual Suspects

Season 2, Episode 7:

The Usual Suspects
Dean and Sam are arrested while investigating suspicious deaths. After the investigator sees the ghost involved, she agrees to help the boys track down the murderer.

Tropes

 * Actor Allusion- At the end of the episode, Dean makes the comment that he could go for some pea soup, a reference to guest star Linda Blair's infamous vomiting scene from The Exorcist.