It was Peter's idea to invite his friends on a joyride on Justus' birthday of all days. In pouring rain, a car breakdown forces the three detectives to seek refuge at the creepy "Blackstone" castle.

"Die drei ???: Das Geheimnis der Geisterinsel" is an adventure game based on the eponymous cult novel. Investigator Justus, Bob and Peter are heading to South Africa to help set up a theme park. But ...

The three investigators want to go on a road trip during their vacation, but just as they are about to set off, the phone rings and an unknown caller hands the trio of detectives their latest case: ...