description: Read by Bill Irwinapprox. 3 hours2 cassettesDetermined to learn the secret of the old mill, Frank and Joe employ a clever use to gain entrance and become trapped. There they unravel two mysteries, one involving a counterfeiting case and the other, a national security case their father is working on.
language: English
title: The Secret of the Old Mill
titlecomplete: The Secret of the Old Mill (Hardy Boys, #3)
characters: Tony Prito, Paul Blum, Mr. and Mrs. Morton, Mr. Reed, Chet Morton, Ezra Collig, Frank Hardy, Mr. Docker, Joe Hardy, Mrs. Smith, Mr. Peters (The Secret of the Old Mill), The Arrow, Oscar Smuff, The stranger at the train station, Fenton Hardy, Iola Morton, Laura Hardy, Ken Blake, Aunt Gertrude, Mr. Markel, Officer Roberts, Callie Shaw, Mr. Evans
genres: Fiction, Adventure, Mystery, Juvenile, Detective, Mystery Thriller, Young Adult, Middle Grade, Classics, Childrens
ratings_count: 8438
places: Bayport, Bridgeport, Connecticut
series: The Hardy Boys, Hardy-guttene
publisher: Grosset & Dunlap