New York: Random House, 1981.
Paperback. 7 5/8" X 5". 134pp. Moderate edgewear to pictorial paper wraps, with creasing to corners and small closed tear to spine. Binding is sound. Pages are mildly age-yellowed, else unmarked. Bookmark missing from perforated page bound at rear. A solid 1981 printing of this Alfred Hitchcock and the Three Investigators mystery for young readers. Good. Item #6036