A surprise visitor to Griff's home in the middle of the night launches the curious young detectives into a series of exciting escapades. Along the way, their homemade gadgets play critical roles as they gather clues and track down a thief. The story turns into a white knuckle dash through Perry Park with a desperate search and race against the clock high above Creek Canyon. This face-paced adventure will have you laughing one minute and holding on to your seat the next. As always, you won't want to put the book down until you reach the exciting and rewarding final pages.Grab your flashlight and hop on your bicycle as you join Griff, Frank, and Chase on a rollicking trip into the skies, down the side of a cliff, and across the white water of Creek Canyon. It's all here waiting for you!