Monster’s_Clue_Hunt. Childrens Books, #999

Benny the Monster loses his favorite red ball and, feeling worried, is helped by his friends Lily the Squirrel and Oliver the Owl. Together they follow clues through the town-from marks near a fountain and a chalk drawing to a trail of feathers and a puzzle box in the sandpit. Though they initially find only a red ribbon under the bridge, they continue to an apple cart where Benny finally discovers his ball.
The story ends with Benny happily reunited with his ball and grateful for the friendship that made the search an adventure.