On the Cusp of Slytherin

1942-1943: A Gryffindor girl learns the hard way why Slytherin boys are best left alone, especially if that boy is named Tom Riddle. AU based on a pre-DH fan theory about Minerva McGonagall. Warning: accidental incest, intimate partner violence. Written 2007, edited 2014. Podfic available at AO3.