Twelve-year-old Isabel and her younger sister Ursula are going on vacation to their grandparents. There is a series of serene summer days ahead: breakfasts in the garden, forest walks, leisurely conversations... But in this carelessness there is anxiety. Isabel feels someone's invisible presence, hears pleas for help - and cannot ignore them. Strange dreams, a locked door to the basement, initials carved on wood, old photographs and a hiding place in a grotto near a forest lake should ultimately form a picture that will become the key to the past and the road to the future. A psychological story balancing on the verge of a mystical thriller, “The Summer House” by the Norwegian writer Cecilie Treimo (born 1976) is a read for those who are ready to think and understand. Extraordinary authenticity, keeping you in suspense until the very last page, is combined with poetic digressions. The book was awarded the Children's and Youth Prize of the Union of Supporters of Riksmål - the Classical Norwegian Language.