Eaux profondes. Poster of the 1981 movie and cover of the 1957 book, Deep Water
VS3
Deep Water
Patricia Highsmith, 1957
movie vs book
Michel Deville, 1981

Melanie enjoys flirting and having little affairs. Her husband Victor seems to bear her antics with utmost calm and nonchalance. This impression turns out to be wrong, very wrong indeed.