A grand yarn, the setting Fire Island in winter, vacationists gone, and a tiny nucleus left. There- for some strang reason- the young Taylors and their artist father, late of Army Intelligence, were wintering, rebelling at being torn from their beloved ranch life. But they stumbled into mystery and adventure, and a strange young friend who taught them to sail, and who had a secret tree house which he shared with them. An up-to-the-minute story of spying and phony buried treasure, and a mysterious background of the sunken forest lying between sea and bay on an island near New York.