Charlotte once had the opportunity to work for the secret services of the British Empire, but now, several years later, this adventure seems almost like a dream. And suddenly the half-forgotten past powerfully invades her life: during a tour of Bedlam - the famous insane asylum - she recognizes in one of the patients an old friend and famous secret agent John Slade! But how did he get there? And why is he considered crazy? Charlotte begins her own investigation.