True Crime Books refer to a genre of literature that involves real-life crime stories. These narratives often encompass elements of mystery and biography, providing detailed accounts of actual criminal cases, investigations, and outcomes. The content is factual, researched, and usually contains in-depth insights into the criminal mind, law enforcement procedures, and legal implications. It straddles the line between mystery books and biographies, in that it offers suspense and puzzle-solving, while also profiling the lives of real individuals involved in the crime.