Just dreadful film about George Hamilton playing some rich playboy type seeing his sister being engaged at the film's beginning and then, strapped for cash, needing to locate some will so he can continue his relative life of ease. Hamilton and his sister have a very, very close relationship it seems. Anyway, Hamilton owes money to thug/gangster/loan shark/over-actor Cameron Mitchell, and he must do whatever is needed to restore his income. This movie is just flat-out one big bore. It is directed by that awful director Gordon Hessler who could have Vincent Price and Christopher Lee in the same film(even in one film having Peter Cushing as well)and make them boring. Hessler is competent behind the camera lens in terms of framing a picture, etc..., but he has little talent in getting his audience interested in what he films or interested in his hangups which abound in almost all of his films. Hamilton is embarrassingly bad mugging to the camera spouting ridiculous dialog and mimicking the likes of Cary Grant, Clark Gable, and Humphrey Bogart. Overact he does and to the point of nausea for the viewer. I cannot say much in favor of this film: it has nothing it would seem to do with Medusa, the location shots in Greece are made to be quite mundane, and the plot...well, let's just say it makes little sense nor creates little interest. The "payoff" at film's end can be seen miles away, and it is yet another Hessler sick, twisted, perverted aspect. Mitchell is fun to watch considering his enthusiasm for the role, which allows him to flood one man's lungs with water via a garden hose and use a bulldozer to push a man in a car over a cliff. As for the rest of the thespians, they are all Greek to me...nearly. This is primarily a Greek production with an American "star" and a German director. Go figure huh? Lucianna Paluzzi plays Hamilton's very, very devoted sister with little appeal. The only performance which I would say offered any merit is that of Takis Kavouris as a somewhat witty, somewhat eccentric police inspector. He has what little dialog that has any worth. But all in all this one is literally a sleeper. It tries to be artsy and intelligent in parts, even having Hamilton narrate ala William Holden from Sunset Boulevard at the beginning. I was so not impressed! Like the lost city of Atlantis, this one sinks right to the bottom, "like a plastic boat in a bath tub." Again, just dreadful.