"Have you ever wanted to solve a murder? Gather the clues the police overlooked? Put together the pieces? Identify the suspect? Journalist Billy Jensen spent 15 years investigating unsolved murders, fighting for the families of victims. Every story he wrote had one thing in common - it didn't have an ending. The killer was still out there. But after the sudden death of a friend, crime writer Michelle McNamara, Billy became fed up. Following a dark...