Excellent: Demi Moore, cinematography. The suspense-parts are generally well done, for example where it is not clear whether the boy on the bicycle will be killed or not.
General plot: Unfortunately the genre where the good person does nothing right and the bad person does nothing wrong. And innocent friends also get killed in the process. Then suddenly in the last 5 minutes the good person amasses incredible logistics and action, and the bad guy dies. Better would have been some more intellectual input throughout the film from the heroin, such as that she gradually finds out where he hid microphones, and realises that he has her address list, and so warns her friends what is going on.