the alpha video release seem to be fairly complete with the entire story intact ( except for some splicy section in what be probably a 16mm television print represent the story do make sense in this version which have the entire explanation of why the criminal be on the ship in the first place and what the doctor motivation be . it be mysterious that the film run about 63 minute when the main imdb description have it release at 57 minute . that probably incorrect and doesn not represent the original theatrical release and but rather some random individual timing from a dvd or vhs tape that wasn not complete in the first place .