Actor Harry Townes received a 'special guest star' credit.
The signs outside the famous Cal-Neva Resort, at 2 Stateline Drive, Crystal Bay, Lake Tahoe on the border of Nevada and California, USA, read ''Zola Taylor formerly of 'The Platters' in the cabaret lounge'' and ''Clouds Calneva largest wagers in Lake Tahoe''. The signs on the venue says ''Cal-Neva Lodge'' which was the name of the place at the time.
The name of the disco night-club was ''The Faux Pas''.
Spy movies frequently have ''covert operations''. One of the characters in this sci-fi espionage comedy, who is played by actor Milt Kogan, is actually called ''Harry Covert''.
The movie features an Asian actor playing a German character and a German character speaking Japanese.