The three ???: Your Case: The Riddle of the Smart City. An exciting detective story to guess along

And how smart are you? Justus, Peter and Bob are to become test residents in the "Smart City". Here, almost everything is controlled by computers. Doesn't that sound exciting? But as soon as the three detectives arrive in the city, things go thoroughly wrong: Peter is locked in the bathroom and the sauna heats up as if by magic. Things don't seem to be going right in this smart town! And that's just the beginning ... This is YOUR case: Your ingenuity as the fourth detective is needed! You decide which clue is the right one and how the story continues.