In a nutshell: good casting, good acting, good setting, Patrick O'Neal and Joan Hackett's charisma, the open ending, and a few good plot twists make this a movie that is quite worth watching. For example - the scene with Joan in the bathtub is exquisite. The dialogue is often witty, yet sometimes too stereotypical. Guess that was not such a problem back in the 60's, though.
If you are into spy movies, you are going to like this. Just don't expect choreographed fighting and Inspector Gadget-type, um, gadgets, but rather set yourself to enjoy a classical movie from the age when movies were movies and not special effects.
If you are into spy movies, you are going to like this. Just don't expect choreographed fighting and Inspector Gadget-type, um, gadgets, but rather set yourself to enjoy a classical movie from the age when movies were movies and not special effects.