 Broadsky points out that Booth has no definite proof that would allow him to feel comfortable shooting his old teacher.Booth is comforted by the news that Brennan does not see him and Broadsky as identical and later successfully arrests him without having to kill him.At the end of Season 8 and the beginning of Season 9, serial killer and hacker Christopher Pelant murders several of Booth's fellow FBI agents and blackmails Booth into calling off his wedding to Bones.