"Solve the riddle of the Sphinx or someone will lose their life." - then the line goes dead. Justus, Peter and Bob are breathless. But the three detectives from Rocky Beach have no idea that they are already in the middle of their next case. A secret organization, a lost treasure and a legendary island from which no one has ever returned alive demand all of the three detectives' skills.
Unfortunately the movie Die drei ??? – Toteninsel is not yet available on HBO Max.
| Writing | Tim Dünschede | Writer |
| Directing | Tim Dünschede | Director |
| Writing | Anıl Kizilbuga | Writer |
| Directing | Daniel Rosness | First Assistant Director |
| Directing | Paul Baumann | Second Assistant Director |
| Directing | Julia Eiber | Second Assistant Director |
| Directing | Naira Cavero Orihuel | Crowd Assistant Director |
| Production | Silke Richter | Production Accountant |
| Directing | Nina Kötter | Script Supervisor |
| Production | Tobias Sybel | Assistant Production Manager |
| Production | Cassandra Han | Casting Director |
| Production | Lorenzo Viti | Casting Associate |
