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Three years after the War Hermione has formed a friendship with Andromeda and Narcissa
who are always doing things that make Hermione question their sanity she's learned facts
about the Black family that no one else knows
The two remaining Black sisters decide to take matters into their own hands in a questionable
way by using a long forgotten spell to throw Hermione back in time as a member of the
house of Black to stop Tom Riddle before he comes to power