A charming and irresistible new Ottoline story from award-winning and bestselling author Chris Riddell. Featuring a set of novelty gadget spectacles!Ottoline and Mr. Munroe do everything and go everywhere together. That is, until the day Mr. Munroe mysteriously disappears leaving a strange clue written in string? Armed with her Amateur Roving Collectors' travel pass Ottoline sets off on a journey over, under and on top of the sea to find her hairy best friend ? and bring him back home.