Public Bathroom Killer and Police Officer Dies

by Alex
(Silkeborg)

I remember seeing a movie where a woman is trapped in a public bathroom with the villain outside trying to kill her.

A police officer comes to the scene, but is run over and the woman drags him into safety fast.
The murderer returns and starts pumping fuel in from a window in attempt to kill the woman and police officer.

The officer gives the woman the bullet, saying there's only 1 shot left, and asks her to shoot him.

She kills the officer, to put him out of his pain, and proceeds to climb onto the roof from a shaft of some sort, just before the murderer blows up the place beneath her.

She makes a run for safety, gets into her car and drives off. She then hits the murderer.

In the end you see another officer and a woman talking outside of a public bathroom, and the woman goes in to use the bathroom and the camera goes into another room where the first woman is standing behind a shelf-looking thing, whispering "Help".

And then the movie cuts out.

Does anyone know what movie this is?