No Sex. Nudity consists of a Full Frontal naked woman on a painting, on a train bedroom. It's towards the end, when Cat goes to see the rich old guy. This is the only nudity in the whole movie.
In one scene, a man trying to avoid capture from the police jumps inside a room with a woman. She is dressed fairly provocatively, but has no sexual interest in him. The man tries to use it as an opportunity to seduce her, but she doesn't give in to his advances. He steals a kiss before leaving.
A similar scene occurs later, but the woman is in a modest nightgown. The man makes more brass overtures this time however, including telling the woman to come to bed with him. She refuses.
A woman pretends to be a prostitute in order to gain access to the bad guy. This scene is fairly sensual, but nothing explicit is said or shown onscreen. She is wearing a cleavage revealing outfit for the duration of this scene.