Una gota de sangre para morir amando (Clockwork Terror) (Murder in a Blue World) (1973)

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An outcast gang member is forced to take part in a clandestine mind-control experiment after witnessing the disposal of a dead body, and attempting to blackmail the killers. When his extensive criminal past is revealed, he is taken to a secret laboratory where scientists attempt to control the… More An outcast gang member is forced to take part in a clandestine mind-control experiment after witnessing the disposal of a dead body, and attempting to blackmail the killers. When his extensive criminal past is revealed, he is taken to a secret laboratory where scientists attempt to control the actions of repeat offenders. There, a beautiful nurse named Anna prepares him for treatment. ~ Jason Buchanan, Rovi