The Hanging Girl by Jussi Adler-Olsen

Trade Paperback; Remainder. The Hanging Girl by Jussi Adler-Olsen. Mystery/Thriller. 

"The book is about the cold case of a girl found hanging from a tree years back on one of Denmark's islands. The cop who tried to solve the case originally has killed himself but as Carl, Assad, Rose and Gordon delve into it they come into contact with a creepy religious cult."