A disgraced filmmaker with nothing to lose pursues the unsolved story of an infamous serial killer in this twisty thriller by a New York Times -bestselling author. Theo Snyder is at the end of his rope. His documentary film became a massive critical and commercial hit, but now his film was canceled after an embarrassingly public misstep. As his desperation grows, he makes a bold decision: to pursue the story of the notorious "Halo Killer", Jasper Ross-Johnson. But delving into the life and mind of a serial killer could prove more deadly than Theo ever could have imagined. At first, things are looking up. Jasper is willing to talk, the footage of the jailhouse meetings is spectacular, and famed investigator Zora Neale Monroe joins him on the project. Theo is sure he's getting close to something no one else has discovered: the truth about why Jasper was captured before he could kill his final victim. Someone else was on the beach that day--someone who just might know how it all happened. Now, Theo must uncover the real ending to the story of the Halo Killer . . . before the truth leads to more deaths.