S1·E22 Devil's Trap

Episode recap

In this episode of Supernatural, Sam and Dean visit a friend of their father's to gather information about demonic possessions and ways to trap a demon. They are seeking this knowledge because Meg, who they believed was a prisoner, has claimed that John is her captive.

Their visit to the friend results in them learning about the existence of a device known as a devil's trap, which is used to restrain demons. The boys' father had previously mentioned this device to them, but they had not yet learned how to use it effectively.

This episode marks a turning point in the series as it reveals that Meg is not what she appears to be. The exact nature of her deception is not explicitly stated in the provided synopsis.