The Potions Master and the Ravenclaw

Professor Severus Snape, the foul tempered Potions Master of Hogwarts School of Witchcraft and Wizardry, has lived a controlled and solitary life. When he finds himself undeniably drawn to a beautiful and clever seventh year Ravenclaw student with a complicated past, the walls he built around his heart begin to crumble. With the return of the Dark Lord and the threat of war looming over them, will they survive?