Crimson, the Color of Blood (1973)

A deranged surgeon conducts a head transplant on a severely injured criminal, unleashing a new wave of violence and chaos. The procedure, intended to save the man's life, inadvertently enhances his malevolent nature, transforming him into a more lethal threat. As his bloodlust escalates, the doctor grapples with the horrifying consequences of his ambition. Set against a backdrop of moral decay, "Crimson, the Color of Blood" explores the dark intersection of medical science and human depravity, ultimately questioning the cost of playing god.