60s or 70s French crime film, woman shotguns rapist

[darius]

A 60s or 70s French crime film.  A woman gets off a bus in the rain, a tall bald man follows her home, rapes her, she recovers later, he comes back, she gives him what for with a shotgun.  She throws the body in the ocean.  The rest of the film she tries to elude some detective(s). 
Someone please help me identify this film.

[darius]

Rider on the Rain (1970)
Le passager de la pluie

Please move to Solved....