Cold Soul (I Want It Back)

All was not well. Voldemort survived the final battle and was imprisoned in Azkaban, bound with a magic-restraining collar. Meanwhile, Harry's magic started growing unstable after the loss of the Horcrux. Six months later, Harry visits his nemesis, intending to get the Horcrux back, but he gets more than he bargained for-namely the former Dark Lord magically bound as his slave.