In "Impulse" a female undercover cop (Russell) stings johns, gets involved with a drug bust, and...yada yada yada. A typical and ordinary Hollywood crime genre product with Russell and Fahey sharing the spotlight, "Impulse" is a par flick, shot entirely in and around L.A., with the usual ugly bad guys, macho cops, chases, shootouts, etc. with the emphasis on drama over action. ...