Time Stands Stilll

Experimenting with Time Turners, Hermione wants to get them to go back more than a few hours, but, like all magic involving Time Turners, it is unpredictable and it goes awry, leaving Hermione stuck in 1976. Enrolled into Hogwarts once again, Hermione meets Severus as a student, and sees just why he is such a bitter and waspish man when she sees the Marauder's at work first hand.