Yves Klein Painted Everything Blue and Wasn't Sorry.

Join our beloved blue-haired heroine as she visits her Great Aunt Astrid in Tofoten. Hilda is surprised to discover that it's a fairy village . . . her mother had never mentioned that. Hilda becomes troubled by a crackly radio presenter, ominous dreams and soon finds herself in peril. Fantastic creatures and daring adventures are all just part of another average day for Hilda, but will her questions be answered?