I have both your sons, Mr Levitt. One of them must die. You choose.Widower Sean Levitt receives the ominous message in the post a few days after his teenage boys go missing on their way to army cadets. As time progresses, the abductor makes increasingly horrific demands of Sean by sending him DVDs, and telling him to post videos online of the shocking assignments he sets him. One Must Die is the story of one man's fight to keep his sons alive, and the terrible lengths he must go to in order to do so.Can Sean do what the police have failed to do and find his sons?Or will the abductor achieve his twisted aim of destroying his entire family?