This is an automatically translated description

A few years after the case that broke him physically and mentally, the legendary detective Pierre Niemann is finally back in action. Together with his student and partner Ivana, he travels to Germany, to the Black Forest, a land of legends where the ghosts of long ago still live, the darkest nightmares nest, and the most terrible secrets are hidden under the branches of gnarled pines. Nieman begins a new investigation: the murder of the heir to a wealthy aristocratic family. The man was not just killed, but slaughtered like a wild boar, which he loved to hunt in his own countryside. Nieman is no stranger to bloody crimes, but he does not know that during the investigation he will have to face the greatest fear of his life. And to look into its black, like a forest, eyes....

In this genre, he is a genius.
Figaro

About the author:

Jean-Christophe Granger is the most popular French writer, journalist and screenwriter. He is the author of the mega-popular novels Crimson Rivers and Land of the Dead. Grange's books have been translated into more than 35 languages, sold millions of copies and have been adapted into several successful films. At the age of 28, he became a well-known international correspondent, working for magazines such as Paris Match, the Sunday Times and National Geographic. Nowadays, he is called the French Stephen King, and his novels have been published in more than 30 countries. Leading film studios in America and Europe are fighting for the rights to film adaptations of Granger's works.