[tim smith 3]

Can any one help me, I am trying to find the name of a film from the 1960's I think it was a spy movie.
The only scene I can remember is of a woman (one of the badies)flying a hang glider dressed in a silver catsuit and goggles being towed into the air across a lake by a speed boat ( she also has water ski's on) once airborn she stealtherly lands the glider in the courtyard of a hotel/consulet unclips the ski's and ditches the hang glider and proceeds to climb up the outside of the building (gaining access to a room through a balcony) I think it is the bathroom, once in there she begins to talk through the door to the hero of the film prettending to be some one he is expecting ( while at the same time stripping off the silver catsuit /goggles and flying helmet to reveale she has dark hair and is wearing a black bask and stockings underneath) she then enters the bedroom were the hero is and holds him at gun point only to be threatened with a gun herself by a blond woman also dressed in black underware.
The blond and the hero then proceed to gag her and tie her up before making there escape.
I know it isn't much to go on but does any one know the title of this film?
I have been searching for it for years.