Tim Matheson. Tim Matheson was 19 in The Hardy Boys: The Mystery of the Chinese Junk as 'Joe Hardy'.Richard Gates. Richard Gates was 19 in The Hardy Boys: The Mystery of the Chinese Junk as 'Frank Hardy'.
Jan-Michael Vincent. Jan-Michael Vincent was 23 in The Hardy Boys: The Mystery of the Chinese Junk as 'Tony Prito (as Mike Vincent)'.
Portia Nelson. Portia Nelson was >> in The Hardy Boys: The Mystery of the Chinese Junk as 'Aunt Gertrude Hardy'.
Ricky Kelman. Ricky Kelman was >> in The Hardy Boys: The Mystery of the Chinese Junk as 'Biff Hooper'.
Richard Anderson. Richard Anderson was 41 in The Hardy Boys: The Mystery of the Chinese Junk as 'Fenton Hardy'.
Edward Andrews. Edward Andrews was 52 in The Hardy Boys: The Mystery of the Chinese Junk as 'Dr Montrose'.
James Shigeta. James Shigeta was 38 in The Hardy Boys: The Mystery of the Chinese Junk as 'George Ti Ming'.
Teri Garr. Teri Garr was 22 in The Hardy Boys: The Mystery of the Chinese Junk as 'Susie'.
Larry Peerce. Larry Peerce was 37 in The Hardy Boys: The Mystery of the Chinese Junk as 'Director'Richard Murphy. Richard Murphy was 55 in The Hardy Boys: The Mystery of the Chinese Junk as 'Adaptation'
Edward Stratemeyer. Edward Stratemeyer would have been no older than 67 in The Hardy Boys: The Mystery of the Chinese Junk as 'Novel'