One dramatic night ten years ago, a guest at the Mountainside Inn was robbed while sleeping. The door to the room was locked from the inside, and neither the thief nor the stolen goods have been seen since. But this Christmas, Detective Agency No. 2 is checking into the same inn.

Join the search for the White Eagle! Detective Agency No. 2 has got a new mystery on their hands, and you can help them by looking for evidence, solving puzzles, and following the clues. So, keep your eyes peeled: the solution is hidden in the text and images – perhaps even on the next page!