Hardcover. NY, Doubleday & Co, 1st, 1956, Book: Very Good, Dust Jacket: Good, Hardcover in a worn, chipped dust jacket, 191 pages. Stated First Edition on copyright page. B&w illustrations by author. "Shipwrecked off the coast of medieval Scotland, identical twins Jan and Brus are the only ones left alive when their father and his men are murdered. They survive by tricking the Scots into thinking that only one of them exists. Having sworn to avenge their father's murder, they foil the man's treasonous plot and keep their vow." Awarded 1957 Newbery honor. Author received 1950 Newbery Award for The Door in the Wall. Clean copy.