Sleuth

"An old crime writer and the young actor who's having an affair with his wife spar in deadly cat-and-mouse games. A radical remake of the 1970s play and film, starring Michael Caine and Jude Law, directed by Kenneth Branagh and adapted by Harold Pinter"

A movie to see.
It looks like teather, it smells like teather, but it is actually a movie.
The typical example how to make a high level movie out of almost nothing, with two actors, one scene and a lot of suspense.
Of course you need actors like Michael Caine and Jude Law, and some brain...