I recall one show that realistically had a lesson on just where to shoot the perp in the head so that no physical reaction, even involuntary, was possible.
A police officer was called to a domestic incident. A man sitting on the couch beside his wife took out a .357 magnum and shot her right between the eyes. When this cop arrived, she was still sitting on the couch with a handkerchief to her forehead. The bullet had passed between the lobes of her brain with surgical precision doing no damage. She said she had a headache. At the hospital they put one bandage on the front and one bandage on the back and sent her home. The officer said, “This remains the strangest event of my entire career.”