Crossing over is the second book in this series of youth novels by Máret Ánne Sara
The first book is In Between Worlds, 2016.
Sanne and Lemme are siblings in a traditional reindeer-herding family. The brother Lemme loves dirt biking and is eagerly looking forward to the new dirt bike track now under construction. In town, his sister Sanne meets a delirious man who babbles something incomprehensible about the -devil-s children.-
After their father-s outburst at the dinner table about how recklessly people, including Lemme, are destroying the grazing lands that the reindeer need, just for the fun of a new dirt bike track, Lemme leaves in a huff. Sanne follows and hops onto the dirt bike behind him.
The teenagers disappear without a trace, and back at home their parents are consumed by grief and despair. Where are they, what happened? All that was found was Lemme-s dirt bike at the construction site for the new track.
