whats the movie where the guy becomes a mechanic for a rich guy and he falls in love with the daughter?

theres a guy who becomes a mechanic at a rich guy's house and he falls in love with the daughter and while he is in bed with the daughter he sees the man kill somebody in the backyard and he finds out the man is in a deal with somebody in the middle east(i think) and the cops get the mechanic to go undercover and the best friend turns against him and the rich guy kidnaps the mechanic's father when he finds out the mechanic is undercover