Great Scotland Yard 1844. When the beautiful Eleanora Scambles claims that her husband has been wrongly arrested for the murder of Edward Mizzentoft, Inspector Bucket of the recently formed Detective Department is intrigued, but there are two problems. The case is already being handled by Bucket's colleague, who is in no doubt about his man's guilt; and someone else observed the conversation between Bucket and Mrs Scambles: someone who will go to great lengths to ensure that the truth never gets out. How can Inspector Bucket and Sergeant Gordon investigate without breaching professional etiquette? And who is the mysterious figure stalking Mrs Scambles?