A very complex mystery develops in London's clubland and among the legal grandees who frequent the Old Bailey and the Inns of Court. For the Blackstone Club, with its fine collection of snuff boxes, is a legal preserve. And when the entire valuable collection is stolen, one young club servant knows exactly how it was done. But when a vicious murder follows, and suspicion falls upon him, he is unable to extricate himself from his predicament by telling the truth ...