Hilda and The Mountain King (#6) by Luke Pearson (6+)

See what new and unexpected perils await our beloved blue- haired adventurer in the sixth book from the widely praised series.

We rejoin our heroine for her latest adventure just as she awakes to find herself…in the body of a troll! Her mum is worried sick, and now has to deal with the strange creature that seems to have taken Hilda’s place. Now, both of them are in a race to be reunited before Ahlberg and his safety patrol get the chance to use their new secret weapon to lay waste to the trolls, and Hilda along with them!