Based on the hit Netflix series, join Hilda and Twig for more hilarious adventures in the 6th volume of the illustrated fiction series. Our favourite blue-haired heroine has to find and rescue Mum before she's eaten by a troll. This means entering the Rock Forest, where Hilda will come across some amazing and magical creatures. Along the way, we'll discover the story behind Twig becoming Hilda's very own deer fox. There is no shortage of unexpected twists, turns and new friends in this latest instalment of the Hilda fiction series.