Book title: The Mermaid (Author:Wentworth M. Johnson)
Finally, Bill has a chance to retire from detective work and settle down gracefully with his new wife, but it’s not to be. A score of dead men hold the key to a more than a 60-year-old mystery and only Bill can solve it. The United States Homeland Security, Interpol, The Royal Canadian Mounted Police and even New Scotland Yard seem to be on the same case. After inheriting a very strange bookshop and a collection of unusual people, Bill discovers he has also inherited a double mystery, a fortune and an angry motorcycle gang.