The Eighth Detective by Alex Pavesi

In this intriguing mystery novel, a young editor named Julia Hart travels to a remote island to meet Grant McAllister, a reclusive mathematician and author who once wrote a collection of detective stories based on his mathematical theory of murder mysteries. As Julia delves into the stories, she begins to uncover inconsistencies and hidden clues that suggest a deeper, more sinister truth behind the tales. The narrative weaves between the stories and the present-day investigation, leading to a shocking revelation that challenges the boundaries between fiction and reality.