After killing model Milly, Mark returns to his film lab, discovering Helen there. She has found out the filmed evidence of his murders. He shows her the spike on his tripod and mirror attached to his camera so his victims could see their own fear. But he finds he cannot kill Helen. When the police arrive after finding out he is the culprit, Mark films them. The he sets up his deadly camera, ready to impale himself. Crying "Helen! I'm afraid! And I'm glad I'm afraid!" Mark makes himself his last victim, filming his suicide. The voices of Mark as a child and his father are heard on tape recordings as police break in and take Helen out.