This Christmas is going to be criminally good. In this advent calendar, you'll explore ancient London, shrouded in mist, and meet master detective Sherlock Holmes. Open a new locked page each day and solve all the mysteries. This case is fabulously illustrated and penned by experienced escape room developers. Decide for yourself which door to open next to uncover all 24 hidden secrets. Each puzzle takes you further through the mind of the detective and his partner Dr. Watson with a code template. With all the clues and the large, glow-in-the-dark poster, will you solve the mystery of a new, exciting case in the universe of the world's most famous detective?

More Escape Room, more puzzles, more story: the Advent calendar book for families and all ages.''.