This was one of the films that French born director George P. Breakston shot in Japan in English..
Satoshi (Tetsu) Nakamura is listed in the credits as "Tetu Nakamura". The actor was famous for his excellent command of the English language. George P. Breakton would cast him again in a crucial role in his most famous production, "The Manster" (1959) which was also shot in Japan in English.