Ep 3. The Girl Next Door

In Supernatural season 7 episode 3, titled "The Girl Next Door," Sam and Dean investigate a series of gruesome murders in a small town. Their investigation leads them to a former childhood friend of Sam's named Amy, who Sam learns has been living nearby under a false identity.

As they dive deeper into the case, Sam begins to suspect that Amy may be responsible for the murders. However, he struggles with whether to trust his own memories of her as a kind and innocent girl, or to give in to his fears that she may be a dangerous monster.

Meanwhile, Dean is dealing with his own issues as he tries to come to terms with the loss of his friend and ally, Bobby Singer, who was killed by a vengeful ghost in the previous episode.

As Sam and Dean race to uncover the truth about the murders and Amy's past, they are forced to confront their own beliefs about right and wrong, and the difficult choices that come with hunting supernatural creatures.

With plenty of suspense, action, and emotional drama, "The Girl Next Door" is a thrilling episode that highlights the complex relationships and personal struggles of the Winchester brothers as they continue their never-ending battle against evil forces.