The Weather Well (The Griffin Maps, Bk. 4)

It’s the height of summer in Moreland, and Grace Griffin and her fellow warden Tom Eely are sweltering in the heat, until they answer a strange call for help that comes through on the amazing Griffin map. After teleporting to Oakwell, they find the town paralyzed by a freezing snowstorm, which is ruining the famous summer market that brings in visitors and trade. Using their mystery-solving skills and amazing inventions, can Grace and Tom find the cause of the weird weather and restore summer from the snow?