Bestselling European thriller starring a blind special ops agent on the hunt for a terrifying serial killer. A blind police detective. A psychopath with a grudge. A hunt that will expose her darkest fear... Jenny Aaron was once part of an elite police unit tracking Germany's most dangerous criminals. She was the best. Until a mission went wrong and she lost her sight forever. Five years later, Aaron has shut out her past life and learnt to navigate a darkened world. A world now guided by sound, smell, instinct and intuition. Then she receives a call. A prisoner has committed a brutal murder in his high security cell. And he will only confess to one person: Special Agent Jenny Aaron.