The Manster

The Manster ? , St no Satsujinki is a tokusatsu 1959 horror film, a coproduction between the United States and Japan, starring Peter Dyneley. The film was notable for its creative use of special effects. The film is also known as The Split in the United Kingdom, Doktor Satan in Greece, and The TwoHeaded Monster.

During the brief interview, Dr. Suzuki amiably discusses his work on evolution caused by sporadic cosmic rays in the atmosphere, and professes that he has discovered a method for producing evolutionary change chemically.Suzuki serves Larry a drugged libation, causing him to fall into a deep sleep. Announcing to Tara Terri Zimmern, his voluptuous assistant, that Larry is the perfect candidate for his latest evolutionary experiments, he injects an unknown substance into Larrys shoulder. ........

Source: Wikipedia