Perhaps the biggest twist in the entire Harry Potter story comes when The Deathly Hallows reveals Professor Snape was a good guy all along. Having spent most of his Hogwarts career walking a fine line between teacher on a power trip and genuinely sinister presence, Snape seemingly lands in the latter camp after murdering Dumbledore in Harry Potter and the Half-Blood Prince . The pendulum soon swings in the opposite direction, with Snape revealed as Album Dumbledore's inside man.

There are clues to the Snape twist dotted throughout Harry Potter 's books and movies . Snape's overt hatred for Harry's father, the numerous times Snape saves Harry's life (starting with the Quidditch match), and the dual meaning of " Severus... please " during Dumbledore's last moments all point

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