The Clockwork Locket

Cassie Alderfair has been doing an exceptional job with being discreet at Hogwarts School of Witchcraft and Wizardry, but her days of being invisible are disrupted in her fifth year, when an unfortunate night of mischief draws attention from the infamous Marauders, and a secret comes to light that may turn the tides of the war… (Marauders' Era)