Title: Never before sunset - Johanna Sinisalo - book
Summary :
A dynamic advertising photographer, Ange lives a stressed, solitary life. One evening, he rescues something that looks very much like a wounded animal from the boots of a group of youths. But what he finds in his apartment is a troll child, lost, certainly, but wild, and disturbingly violent.
Then begins, on the one hand, a discreet investigation into these beings that many documents do not say are imaginary but very real and, on the other hand, a game of hide-and-seek with friends, work colleagues and neighbors in the building.
The photographer's daily life, who may have the opportunity to take the photos of his life but must hide the existence of his troll, is thus mixed with data which, gradually, confirms to him that what he is experiencing is not a dream but a dangerous reality to which he will have to find a solution... necessarily radical.