Possession (слэш)

Harry is 17 and leaves the Dursley’s in an attempt to gain at least some form of freedom. A sinister stranger captures him. After days of torture and the loss of hope that the Order would ever find him, a familiar voice begins to whisper at the back of his mind. When Harry begins to long for death and it is knocking at his back door, he gives in and answers Voldemort’s whispers. His dying confessions leave the Dark Lord in shock and he becomes something to Harry that no one would have ever believed: his savior.
This is book one to a very slow-burn Harrymort that you just might get sucked into.