At the beginning of the term, Olive Silverlock returned to Gotham Academy a shadow of her former self. But thanks to her new friendships and their Detective Club sleuthing, Olive was finally starting to feel whole again. Then, abruptly, Olive's mother died -- or, she seemed to. In the weeks after the funeral, Olive begins seeing her mother around the school. An Arkham Asylum patient with a deadly dark side, Sybil Silverlock was a powerful and complicated woman. Could her spirit be reaching out from beyond the grave? And if so, is it motherly Sybil who haunts Olive -- or her deadly alter ego Calamity? Plus, the kids hunt a werewolf on campus and Maps teams up with the Academy's newest transfer, Damian Wayne!