Discover
Original Release
09/08/1967
US Release
09/08/1967
Cast
| Name | Character |
|---|
| Richard Gates | Frank Hardy |
| Tim Matheson | Joe Hardy |
| Portia Nelson | Aunt Gertrude Hardy |
| Rickey Kelman | Biff Hooper |
| Jan-Michael Vincent | Tony Prito / Tony Prito (as Mike Vincent) |
| Stephen Jahn | Chet Morton |
| Brian Fong | Jim Foy |
| Richard Anderson | Fenton Hardy |
| Edward Andrews | Dr. Montrose / Dr Montrose |
| James Shigeta | George Ti Ming |
Directors
Writers
Edward Stratemeyer, Ronald Dunas, Richard Murphy
Creators
Cast
| Name | Character |
|---|
| Richard Gates | Frank Hardy |
| Tim Matheson | Joe Hardy |
| Portia Nelson | Aunt Gertrude Hardy |
| Rickey Kelman | Biff Hooper |
| Jan-Michael Vincent | Tony Prito / Tony Prito (as Mike Vincent) |
| Stephen Jahn | Chet Morton |
| Brian Fong | Jim Foy |
| Richard Anderson | Fenton Hardy |
| Edward Andrews | Dr. Montrose / Dr Montrose |
| James Shigeta | George Ti Ming |
| Malcolm Atterbury | Clams Daggett |
| Emile Meyer | Burke |
| George Shibata | Ben Foy |
| Teru Shimada | Mr. Pan |
| Howard Smith | Cummings |
| Ronald Le Masurier | Curator |
| Susan Swetnam | Callie |
| Trudi Ames | Milly |
| Cindy Ferrare | Iola |
| Joanne Dalsass | Joanne |
Producers
| Name | Role |
|---|
| Richard Murphy | Executive Producer |
| Larry Peerce | Producer |
| Ronald Dunas | Producer |
