First film in which veteran on-screen villain Hwang Jang Lee is the good guy.
One of six films where Jeong-lee Hwang played a good guy. The others being Black Dragon River (1976), Secret Envoy (1976), Blood Child (1982), Kwangdong Viper (1983), and The Innocent Interloper (1986).
Hwang Jang Lee's Directorial Debut.