It's only flaw is using superstars in small roles: Tony Curtis, Burt Lancaster, Robert Mitchum, and Frank Sinatra. Only Robert Mitchum had a good part in his friend's movie. The starring cast were not as well known but could have carried the movie without the help of the super stars.
The movie stars George C. Scott in one of his first starring roles. His English accent is pretty good. The rest of the cast is superb. The actors:
Dana Wynter, Jacques, Herbert Marshall, and Clive Brook were probably given one of their last good roles in a movie. Only Gladys Cooper was able to make another good movie a few years later, "My Fair Lady". It is fun to see the director's son, Tony Huston, play Ms. Wynter's son. He does a pretty good job for an amateur.