Fatal Beauty (1987)

Rita Rizzoli is a narcotics police officer with a plethora of disguises. When a drug shipment is hijacked, the thieves don't know that the drug is unusually pure, and packs of "Fatal Beauty" begin turning up next to too many dead bodies. Mike Marshak works for the original owner of the drugs and tries to tell himself that since he does not handle the drugs, he is "clean". Mike becomes Rita's constant companion as the drug hijackers (who are nearly psychotic and very well armed) are hunted, while more and more bodies continue to turn up.