For a long time you have heard legends about the Island of Vacros; when you were only a child, the stories about evil minotaurs were used to scare you into behaving. Now you are grown, and you no longer believe children's stories.But King Trueon of Cathos is worried: his daughter Princess Lydora has been kidnapped, and he has found clues that she has been taken to the ancient and evil island of Vacros. You have heard rumors that a large and dangerous mazework lies beneath the surface of the island - a mazework that is guarded by minotaurs. Of course many rumors are false, but then again...The Maze of the Riddling Minotaur is the second in a series of invisible ink modules: using the invisible ink pen included in this module, you may play the adventure by yourself. After you have played the solo version, you have not used up the module: instructions are provided as to how you may change the solo vversion into an exciting group adventure!