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.
| Directing | Florian Baxmeyer | Director |
| Directing | Jan Sebastian Ballhaus | Director |
| Writing | Philip LaZebnik | Screenplay |
| Writing | David Howard | Screenplay |
| Writing | Thomas Oliver Walendy | Screenplay |
| Writing | Ronald Kruschak | Screenplay |
| Writing | Robert Arthur Jr. | Author |
| Crew | Elisabeth Arthur | Creative Consultant |
| Editing | Ueli Christen | Editor |
| Sound | Annette Focks | Music |
| Art | Albrecht Konrad | Set Designer |
| Art | Billy Keam | Set Designer |
| Costume & Make-Up | Esther Walz | Costume Design |
| Writing | Ronald Kruschak | Creative Producer |
| Production | Sytze van der Laan | Producer |
| Production | Malte Grunert | Producer |
| Production | David Groenewold | Co-Producer |
| Production | Stuart Pollok | Executive Producer |
| Production | Michael Schwarz | Line Producer |
| Production | Dieter Stempnierwsky | Line Producer |
| Production | Giselher Venzke | Co-Producer |
| Crew | Peter Krause | Cinematography |
| Production | Jennifer L. Smith | Casting |
| Art | Darryl Hammer | Art Direction |
| Art | Elgin Rust | Art Direction |
| Art | Graeme Blem | Set Decoration |
| Costume & Make-Up | Marie Maggio | Assistant Makeup Artist |
| Costume & Make-Up | Björn Rehbein | Key Hair Stylist |
| Costume & Make-Up | Björn Rehbein | Key Makeup Artist |
| Production | Jayson de Rosner | Unit Production Manager |
| Crew | Gabriele Niemeyer | Post Production Supervisor |
| Directing | Lali Avis | Second Second Assistant Director |
| Directing | Jan Sebastian Ballhaus | First Assistant Director |
| Directing | Wendy Croad | Second Assistant Director |
| Directing | François Doge | Second Unit Director |
| Directing | Eva Franzen | First Assistant Director |
| Directing | Agne Januskyte | Second Assistant Director |
| Sound | Ralph Thiekötter | Sound Re-Recording Mixer |
