Hilda’s essay detailing her remarkable encounter with a troll earned her an unexpected opportunity: to accompany Erik Ahlberg, Trolberg’s newly appointed head of the safety patrol.

Hilda's pursuit of hidden truths concerning Ahlberg precipitates a voyage across the ocean, undertaken in the company of the Wood Man, and ultimately plunges them into a perilous situation.

A shimmering portal appeared unexpectedly within the hushed confines of the library, discovered by Hilda and Frida. Drawn into the unknown, the two friends found themselves compelled to join forces with the library's keeper in a desperate p…

During an overnight camping trip with Hilda and Frida, David finds himself unexpectedly thrust into the heart of a fierce conflict, forcing him to face a multitude of long-held anxieties.

During a birdwatching outing, Hilda, Frida, and David encounter meteorologist Victoria Van Gale, whose serene new existence stirs a sense of unease in one of them.

A disquiet settles over Trolberg with the hourly chime of the bell system, prompting Hilda and her companions to devise a carefully considered plan to silence the persistent sound.

Hilda and Frida embarked on a thorough inquiry, determined to demonstrate that the island's fiery inhabitant was not to blame for the recent series of attacks on vessels.

Hilda discovers a means of traversing time, and soon learns, with a sharp and painful clarity, the inescapable weight of consequence. She finds herself tempted to alter the past, to reshape events according to her own desires.

When Twig, Hilda’s deer-fox companion, departs for the wild, Hilda and her mother embark on a search, a journey that awakens a tide of poignant recollections.

Heading towards Trolberg's Winter Festival, Hilda, Frida, and David encountered a peculiar gathering of small folk. They seemed engaged in a search – a pursuit, perhaps – for children who had misbehaved.

With a determined air, Hilda and her companions prepared for a journey into the fantastical. Their quest: to undo a spell that had fallen upon the headquarters of Jorts, the town's beloved snack food company.

Alfur found himself in a precarious position, compelled to answer inquiries from the Elf Kingdom regarding his increasingly sensational accounts of Trolberg. The urgency of the situation demanded a boldness he hadn't anticipated.

Hilda, her mother, and Twig sought an escape from the enigmatic forest teeming with trolls, as meanwhile, a concerned David and Frida set out from Trolberg to find them.