Lady Squeaks and the villagers of Little Wensley are all looking forward to the annual All Hallows' Eve Masquerade Ball at Hamster Hall. But when Lady Hamsteria discovers a golden harp, the ghosts of the past are awakened. Could Parsnip Palais be haunted?
Lady Squeaks is reunited with her cat detective friends, Mr. Spaghetti and Mr. Franco Tinkles. The friends embark on an unexpected adventure as they try to solve the mystery of the lady of the harp.