What's this similar to?

Its a remake of the French thriller "Deadly Circuit" (1983) with Isabelle Adjani - http://www.imdb.com/title/tt0084358/?ref_=fn_al_tt_1

And if you want another movie that is somewhat similar to this, check out the obscure and little known direct to video Hollywood psychological police thriller "Someone to Die For" (1995) by Clay Borris and theme wise, it has many common elements, surprisingly -
http://www.imdb.com/title/tt0114495/?ref_=fn_al_tt_1

The greatest trick the Devil has ever pulled was convincing the world he didn't exist!