New York: Grosset & Dunlap, (c 1960.). Hardcover - The hero of this series, Biff Brewster is a 16 year old who lives in Indianapolis but is "encouraged" by his parents to travel to various parts of the world during vacation months. Combines mystery and suspense with information about different cultures. Bound in beige tweed with green and white scenic endpapers. Illustrated with a frontispiece and several interior illustrations, including a double page spread that reproduces the river scene on the endpapers. Lists to #3 at front of book.. 182 pp.