The hobby detectives “The Three Investigators” want to take a little break. So they take advantage of an offer from Peter's father, who has accepted a job in South Africa and wants to take the detectives there. But Jupiter, Peter and Bob wouldn't be the three investigators marks feared by the criminal world if they just lounged around in the sun on their vacation. So it's no wonder that the clever boys soon have their next case to solve...
Unfortunately the movie The Three Investigators in The Secret of Skeleton Island is not yet available on HBO Max.
| Sound | Annette Focks | Music |
| Writing | Thomas Oliver Walendy | Screenplay |
| Costume & Make-Up | Esther Walz | Costume Design |
| Writing | Ronald Kruschak | Creative Producer |
| Writing | David Howard | Screenplay |
| Art | Billy Keam | Set Designer |
| Directing | Florian Baxmeyer | Director |
| Crew | Elisabeth Arthur | Creative Consultant |
| Production | Malte Grunert | Producer |
| Directing | Jan Sebastian Ballhaus | Director |
| Production | Sytze van der Laan | Producer |
| Art | Albrecht Konrad | Set Designer |
| Writing | Ronald Kruschak | Screenplay |
| Editing | Ueli Christen | Editor |
| Writing | Robert Arthur Jr. | Author |
| Writing | Philip LaZebnik | Screenplay |
| Costume & Make-Up | Marie Maggio | Assistant Makeup Artist |
| Crew | Gabriele Niemeyer | Post Production Supervisor |
| Directing | Jan Sebastian Ballhaus | First Assistant Director |
| Directing | Eva Franzen | First Assistant Director |
| Directing | Lali Avis | Second Second Assistant Director |
| Directing | Wendy Croad | Second Assistant Director |
| Directing | François Doge | Second Unit Director |
| Production | Stuart Pollok | Executive Producer |
| Production | Giselher Venzke | Co-Producer |
| Crew | Peter Krause | Cinematography |
| Art | Darryl Hammer | Art Direction |
| Art | Graeme Blem | Set Decoration |
| Production | Dieter Stempnierwsky | Line Producer |
| Production | Jennifer L. Smith | Casting |
| Art | Elgin Rust | Art Direction |
| Costume & Make-Up | Björn Rehbein | Key Hair Stylist |
| Directing | Agne Januskyte | Second Assistant Director |
| Production | Michael Schwarz | Line Producer |
| Production | Jayson de Rosner | Unit Production Manager |
| Production | David Groenewold | Co-Producer |
| Costume & Make-Up | Björn Rehbein | Key Makeup Artist |
| Sound | Ralph Thiekötter | Sound Re-Recording Mixer |
