Advent calendar 2023 with an exciting detective story to puzzle over. Special mechanics: Every day, a puzzle in the story must be solved in order to find the next door. The three ... investigate in the snow. Great detective gadgets to collect. Great gift for amateur detectives aged 8 and over. Solving puzzles during Advent. The three of them. Franzi, Kim and Marie are on a skiing holiday with a youth group. They save themselves from a snowstorm in a mountain hut. Something is wrong there. Is one of the teenagers behind it? And where is the valuable crystal crown for the winner of the village ski race? It disappeared years ago. The girls investigate and children aged 8 and over continue to read the exciting detective story day after day. To open the next door in the Advent calendar, a puzzle must first be solved. 24 gadgets provide an additional surprise.