This one might be impossible, but here goes.
PC-game ca. 1997, horror, first person, point and click with video cutscenes.
The version I played had Norwegian voices. The bad guy is called Bob.
During the demo, as you click around, you get video cutscenes which I think are flashbacks. One of them involves Bob and an old lady. Bob is telling you to answer some question. The old lady says hitting you won't help, but Bob asks her if it won't help to beat you up a bit.
At the end of the demo you've collected information about something, and have to confront a bad guy. You can either kill him, blackmail him, come clean with him or run away. Different cutscene depending on what you do.
If you blackmail Bob, you confront him as he's hitting something/someone while shirtless. You begin by saying something like: "Hi Bob. I see you're not all muscles."
The demo begins and ends with a trailer for the full game. The trailer includes a woman's severed head, sinking in water, saying something like: "You only dared to kiss my lips after it was over."