Hogwarts; A Half Blood Mystery

Years after Voldemorts death, life continues to go on peacefully in Hogwarts school of Witch Craft and Wizardry. That is for everyone but Jack Hunter. Jack has been flooded with dreams of a mysterious girl. Do these dreams have anything to do with the someone hidden in a secret room of the school? With the help of his favourite lighting-bolt scarred Professor and a rather goofy bestfriend, Jack is ready to solve this strange mystery, only after he drives Snape insane.