Micul Devoratorii Mortii: Their reign of terror (Harry Potter Fanfic)

A few years after the great war that tore apart families and souls of many of those in the wizarding world a new year begins at the great school of witchcraft and wizardry. Three young girls are left in the unknown to face a danger left in the aftermath of Voldemort's demise. A new group has risen like a Phoenix from the ashes to attempt to bring down the school from the inside. Will the girl's manage to stop them? Or will they too fall.