The Postcard Mysteries satisfy a reader’s craving for mysteries that mix romance and mystery with places and history. Postcards serve as a catalyst that catapults ordinary people into unexpected adventures. Written to appeal to people who believe a person can change their life, these books feature men and women who throw caution to the wind in order to try something different, opening themselves up to mystery, adventure, and finally, love. Rumrunner’s Reef: A Postcard to a Smuggler. The sight of a nearly naked man emerging from the waters of Florida Bay provides an interesting start to Lizette’s vacation. But, are the Florida Keys really different from Chicago?