Can you figure out Cluedunnit? Grab a pencil and join P.I. Hartigan Browne to unravel riddles, crack codes, and catch the culprit in the fifth installment in this fun, interactive puzzle adventure series.

Calling all sleuths! The fifth title in the Cluedle series of interactive mystery books for young readers takes place at Grindstone Academy, the most prestigious boarding school in England. World-renowned Private Investigator Hartigan Browne has been contacted by the headmaster Basil Thumblethorpe to help locate the whereabouts of the Grindstone Goblet, a jewel-encrusted golden trophy given to the school in the 1400s by King Henry VI. Needless to say, it is exceedingly valuable. Finding the goblet and who is responsible for the theft will take reader-detectives on undercover assignment as new students as they track clues to every corner of the school campus. Along the way, readers tackle 60 brain-busting puzzles, each holding a clue to solving the larger mystery. Only detectives with excellent brains and superior logic skills need apply. 

• WHY have all the books in the library been moved?
• WHAT is the "treasure of immense worth"?
• CAN the key to finding the Goblet be found in a poem by William Shakespeare?

Packed full of codes to crack, evidence to evaluate, clues to unravel, and maps to navigate, Cluedle: The Case of the Grindstone Goblet is chockful of puzzling fun!