血刃边缘

Sergeant Mark Quinn is a policeman who is known among his superiors as extremely persistent, unrestrained, and merciless against criminals. The reason for this is to be found in his past. When he was a child, he was the only one who had escaped a family massacre, and the murderers of his parents were never caught. In the meantime, he was raised by a Japanese and taught the arts of the ninja. The tough, longstanding training pays off when he meets the killer of his father again. With all weapons and the precise and deadly techniques of the ninja, he takes revenge.