 The film was produced and written (under pen name Peter Welbeck) by Harry Alan Towers and co-stars his wife Maria Rohm as one of the three female leads.The film features a minor connection to Edgar Wallace's short stories by using his Commissioner Sanders as an officer in the Royal Hong Kong Police with Towers using Wallace's name to attract funds from international film investors.The Five Golden Dragons are an international criminal gold trafficking secret society syndicate based in Hong Kong.