“Run!” cried Grace. “It’s a … snow tornado!” 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 paralysed 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? Start the adventure with The Griffin Gate, The Puffin Portal and The Raven Riddle — Information for Adults: This book has a dyslexia-friendly layout, typeface and paperstock so that even more readers can enjoy it. It has been edited to a reading age of 8.