The sadistic and ruthless collector of gems, Francisco de Cobra, hears about the world's largest diamond. He travels to the Amazonian jungles to get his hands on the item - and murders all his companions while he's at it.; A cruel master pianist is killed by his wife and her lover. The maestro's hand however returns and strangles every single soul in the household.; Etienne Mardu, Parisian art painter, gains success by painting with blood. First his own, then his models'. But the magic canvases come to life and put an end to Mardu's grisly career.; Madman Marko controls an army of robots by pure thought. On his way to world domination he makes one fatal mistake.