Styx regains control of his body and his instincts. He tries to exonerate himself by introducing an informant, but a tragedy on the beach puts all his nerves on edge. In the meantime, Doctor Vrancken continues his experiments...

Shocked by what he has done, Styx isolates himself. He realizes that he is a danger to those around him. But then a first victim is found. The work of the masked serial killer is revealed...