 Sonny Chiba (qv) was originally cast to star in this film along  with George Lazenby (qv) and Bruce Lee (I) (qv). Chiba flew to  Hong Kong in order to meet Lazenby and Lee and to sign his contract  for the film. At just about the very moment that Chibas plane was  landing in Hong Kong, it was being announced that Bruce Lee had  died. The original project featuring Lee, Lazenby, and Chiba was  then changed to feature just Lazenby, as Chiba decided not to sign  his contract for the film knowing Lee would not be in it.