Set sail with Samantha and Nellie aboard an ocean liner bound for Europe in 1906. Also traveling on the ship is a world-famous archeologist with the legendary sapphire he discovered. Before the archeologist can deliver his treasure to a London museum, this priceless jewel disappears. Samantha realizes that every one of the first-class passengers is a suspect—and one of them must be the thief! Can Samantha and Nellie uncover the real culprit and find the missing jewel? Book includes an illustrated "Looking Back" essay and a glossary of French words used in the story. Author: Sarah Masters Buckey. Paperback. 192 pages.