* _Ashleighs engler_ (2009)
* _The Bay of Lost Souls_ (2012)
* _Den siste sangen_ (2013)
* _The Weight of Dreams_ (2014)
* _Jenta i tårnet_ (2015)
* _The Lost Island_ (2016)
* _The City of Mirrors_ (2017)
* _Den hemmelige hagen_ (2018)
* _Hemmelighetenes øy_ (2019)
* _Huset på bakken_ (2020)
* Faktalitteratur:
* _Verdens historie i 50 dyr_ (2011)
* _Verdens historie i 50 planter_ (2013)
* _Verdens historie i 50 bygninger_ (2015)
* _Verdens historie i 50 personer_ (2017)
* _Verdens historie i 50 kart_ (2019)
* Barnebøker:
* _The Adventures of Captain Bobble Beard_ (2011)
* _The Adventures of Captain Bobble Beard:The Search for the Lost Treasure_ (2012)
* _The Adventures of Captain Bobble Beard:The Battle of the Bad Bananas_ (2013)
* _The Adventures of Captain Bobble Beard:The Quest for the Golden Fleece_ (2014)
* _The Adventures of Captain Bobble Beard:The Voyage to the Center of the Earth_ (2015)