The episode has been positively received by commentators . In 1980 , it was re-edited to form a segment of the '' Captain Scarlet '' compilation film '' Captain Scarlet vs. the Mysterons '' . When BBC Two began repeating the series in September 2001 , " Winged Assassin " was postponed from its intended transmission date due to perceived similarities between its plot and the September 11 attacks . In a transmission to Earth , the Mysterons ( voiced by Donald Gray ) warn Spectrum that they intend to assassinate Xian Yoh , the Director General of the United Asian Republic , who is currently in London on a state visit . An attempt to kill the target in his hotel room is foiled by Captain Grey ( voiced by Paul Maxwell )
September 11 attacks
September 11 attacks
Winged Assassin