Frank and Joe Hardy are the sons of Fenton Hardy, a famous private detective. Finding everyday life at home in Bayport dull, the boys hope their father will let them work on one of his cases. Disappointed when he tells them his work is too dangerous for children, they are more determined than ever to follow in their dad's footsteps, and solve mysteries.
| Directing | Charles F. Haas | Director |
| Writing | Edward Stratemeyer | Novel |
| Writing | Jackson Gillis | Teleplay |
| Sound | William Lava | Music |
| Crew | Gordon Avil | Cinematography |
| Crew | Walter Castle | Cinematography |
| Editing | Joseph Dietrick | Editor |
| Editing | George Jay Nicholson | Editor |
| Editing | Al Teeter | Editor |
| Art | Bruce Bushman | Art Direction |
| Art | Marvin Aubrey Davis | Art Direction |
| Art | Fred M. MacLean | Set Designer |
| Costume & Make-Up | Chuck Keehne | Costume Designer |
| Costume & Make-Up | Lois Murray | Hairstylist |
| Costume & Make-Up | David Newell | Makeup Supervisor |
| Production | Russ Haverick | Production Manager |
| Directing | Robert G. Shannon | Assistant Director |
| Sound | Robert O. Cook | Sound |
| Sound | Dean Thomas | Sound Mixer |
| Visual Effects | Ub Iwerks | Visual Effects |
| Costume & Make-Up | Carl Walker | Wardrobe Supervisor |
| Sound | Thurl Ravenscroft | Theme Song Performance |
| Directing | Edle Bakke | Script Supervisor |
| Production | Louis Debney | Production Assistant |