[Hotfire]

The action is something like this:

A mature blonde woman is relaxing in her vacation home when a man knocks on the door and asks to use the phone to call for car repair.

As soon as she turns her back to him, he grabs her and with a knife held to her throat, rapes her for an hour or so.

I hope the capture from the clip might jog someones memory.
If you don't know where I can find it, perhaps one of you knows the name of the actress. I think she was Scandinavian.