Harry Potter and the Order of the Phoenix (Harry Potter 5)

"The director believes it's not advisable for this to continue. He wants me to teach you how to close your mind to the Dark Lord."

These are dark times for Hogwarts. After the Dementors attack his cousin Dudley, Harry Potter understands that Voldemort will stop at nothing to find him. Many deny that the Dark Lord has returned, but Harry is not alone: ​​a secret order is gathering at Grimmauld Place to fight the dark forces. Harry must allow Professor Snape to teach him how to protect himself from Voldemort's brutal incursions into his mind. But these incursions are growing ever more powerful, and Harry is running out of time...