After the Affair of the Clockwork Scarab, Evaline Stoker and Mina Holmes are eager to help Princess Alix with a new case. Seventeen-year-old Willa Aston is obsessed with spiritual mediums, convinced she is speaking with her mother from beyond the grave. What seems like a case of spiritualist fraud quickly devolves into something far more menacing: someone is trying to make Willa "e;appear lunatic,"e; using an innocent-looking spiritglass to control her. The list of clues piles up: an unexpected murder, a gang of pickpockets, and the return of vampires to London. But are these events connected? As Uncle Sherlock would say, "e;there are no coincidences."e; It will take all of Mina's wit and Evaline's muscle to keep London's sinister underground at bay.