I'm looking for a movie, it's probably from the 90's by I'm not sure.
There is a couple and some guy that I believe is an investigator.
The man from the couple owns a car shop and his wife is a sexy blonde that eventually seduces the "investigator", she also plots to kill her husband (which she does). There is cheating with the investigator, there is a sex scene in a car, I remember a scene close to the end of the movie where he follows her to some kind of mill (lumber mill maybe) and she is almost naked and she jumps from a high place when he gets near her into a pile of something soft (sawdust?).
I also remember a fire in an office building near a bank (something about a distraction to rob the bank?).