About the book: 2005 / The plot of the novels "The Mystery of the French Powder" and "Sherlock Holmes vs. Jack the Ripper" is based on bluff, disguise, substitution... These methods are criminal actions are difficult to unravel. And it doesn’t matter whether they relate to facts or personal identification. But the famous writer and amateur detective E. Quinn, as always, is not afraid of difficulties and brilliantly identifies the killers.