The Secrets of the Grimhill Sanatorium: The Blood Red Crystal

A captivating middle-grade trilogy about being an outsider, of friendship, bravery, and loss.

  • A mystery adventure trilogy where nothing is what it seems
  • The atmospheric setting, strong characters and unique plotlines make this an irresistible read
  • Series trailer in English available

The shadows over the castle grow, and no one is safe…

In the second part of the trilogy, fate leads the children from the shelter of Grimhill’s walls to the dark alleys of the city and nightly meadow.

The cold autumn winds are blowing, and a new school year begins in Grimhill. Oskar, Robin and Vilma meet again with the familiar staff of the sanatorium and the new head doctor, Hjalmar Klemet. All seems to be well on the surface, but underneath the surface the friendship between the trio is put to the test: Robin spends more and more time with the girl who arrived at the sanatorium in the spring and Vilma retreats more into her own world. The disturbing noises during the night are getting louder again and won’t leave Oskar alone. The final piece of the map leading to the forest is finally found, and the children learn of a mysterious and life-threatening task. A task that only the three of them can complete.


The Secrets of the Grimhill Sanatorium: Seven Lily-of-the-Valleys

A captivating middle-grade trilogy about being an outsider, of friendship, bravery, and loss.

  • A mystery adventure trilogy where nothing is what it seems
  • The atmospheric setting, strong characters and unique plotlines make this an irresistible read
  • Series trailer in English available
  • For fans of Astrid Lindgren and Harry Potter

The thoughtful and elaborate opening of a middle-grade trilogy opens the doors to the mysterious Grimhill sanatorium, where secrets and dangers lurk both on the labyrinthine corridors as well as in the surrounding forest.

Oskar is a perfectly average boy living with his parents in the red brick house by the biggest market square in the city. Everything changes when he is diagnosed with a serious illness. His parents send him to the remote Grimhill sanatorium, which from the very first moments feels suspicious and off-putting – and the staff don’t make it better. It seems like they are hiding something. Together with his new friends Robin and Vilma, Oskar gets pulled into a compelling adventure as they try to find out what is behind the ominous voices in the night. And what is hiding within the cold forest which seems to enchant the children?

The Secrets of the Grimhill Sanatorium: Seven Lily-of-the-Valleys begins an exciting and warm trilogy where nothing is what it seems.


Janne Malinen

Janne Malinen (born 1981) has worked for a long time in communication and as a freelance journalist. He has graduated from University of Helsinki in 2010 with the major in literature. In 2022, he was selected as Communication Consultant of the Year in Finland. The Secrets of the Sanatorium: Seven Lily-of-the-Valleys is Malinen’s debut book and the first book of the series.