ContentsAn Unpleasant Dinner PartyIn Room 18Dr. Letheny Does Not ReturnA Yellow Slicker and Other ProblemsA Lapis Cuff LinkI Make a Discovery—and Regret ItThe Disappearing Key and Part of an InquestA Gold SequinUnder the Barberry BushA Midnight VisitorBy the Light of a MatchRoom 18 AgainThe Radium AppearsA Matter of EvidenceCorole Is Moved to CandourThe Red Light Above the DoorO’Leary Tells a StoryO’Leary Revises His Story