It is common practice in the ancient families that if an heir is not compliant with the family's demands, that a new, older heir will be born by using a Time-Turner. Verena Black is an outcome of this practice. (Self-harm, depression, suicidal triggers)
12 years in Azkaban changes a man. Sirius Black has escaped and his wife, best friend, and godson must help free Black before the other escapees find and kill himself and his Auror wife. 3rd book! Terrible summary! OneShot!
Most Pureblood families are known for their darkness and loyalty to the great Lord Voldemort. Katerina Black is no exception. She has been "dead" for the past ten years. Attending her first year at Hogwarts, Katerina has one mission: save the Black name. As secrets of her family's past are revealed, will she switch allegiances or join Lord Voldemort as her blood name requires?