It was just another time of enjoying milkshakes and small talk. Neither Debbie Cuevas nor her boyfriend, Mark Brewster, gave much thought to the white pickup truck that had pulled up beside them on the riverfront. Until . . . a revolver thrust through the driver's window . . . a hand jerked Debbie's head back and a voice said, "Don't do anything stupid" . . . and a quiet Friday evening abruptly became a nightmare. For the first time, here is the untold other half of Dead Man Walking, the movie that depicted killer Robert Willie's death-row relationship with spiritual advisor Helen Prejean....