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Mostly talk. All the actual sex is hinted at. Some scenes of prolonged kissing.
Several shootings, all of them bloodless.
mild
Some scenes showing characters smoking and drinking; nothing heavy is presented though.
The two most famous (and important) scenes might frighten children. In the middle of the film, Thornhill is chased by a cropduster. And in the dramatic climax, VanDamm chases Kendell and Thornhill across Mount Rushmore.