Bones and Catson are visiting New York when the local police chief tracks them down. She explains that the city is being terrorised by a mysterious masked villain who is threatening the police with chaos if they don't solve his riddles. The officers are struggling, and it's lucky for them that the world's greatest puzzle experts are in town. After thwarting a fiendish plot in Manhattan, Bones and Catson are hot on the heels of the mysterious criminal, on a chase that will take them to Niagara Falls and across the faces of the great dog presidents on Mount Ruffmore.

But there's a greater mystery to solve while all this is going on. Who is the villain? And how can they unmask them?

The fifth book in Buster's Sherlock Bones fiction series features intricate artwork and illustrated puzzles - including search-and-finds, mazes and number riddles - that are woven into the action, so the reader feels immersed in the exciting detective plot.

Also available in the series:
9781780557502 Sherlock Bones and the Case of the Crown Jewels
9781780557519 Sherlock Bones and the Curse of the Pharaoh's Mask
9781780559216 Sherlock Bones and the Mystery of the Vanishing Magician
9781780559223 Sherlock Bones and the Horror of the Haunted Castle