Join P.I. Hartigan Brownesolve in this fantastic, festive, interactive puzzle adventure story--perfect for code-cracking families and skillful young super sleuths. Can you figure out Cluedunnit at Christmas? Set in a remote mansion called Mistlehurst Hall, the reader--under the watchful eye of world-famous Private Investigator Hartigan Browne--must tackle 80 clever Christmas puzzles, each of which holds a clue to solving the larger mystery of where Sir Rudolph Hollygrove-Winterton hid the family ruby. Who poisoned Ruth Toppler? What does the mystery key unlock? Can anyone escape the curse? Packed full of codes to crack, evidence to evaluate, clues to unravel, and maps to navigate, Cluedle: The Case of Rudolph's Revenge is chockful of puzzling fun! The Cluedle series combines all the best elements from your favorite games, puzzles, and yes--books--to create an engaging, active read that pairs well with the likes of Sudoku, crosswords, logic puzzles--even Murdle Jr. These crime solving series are perfect companions, because kids can't get enough of clever crooks and mild mayhem!