Classified Story Sketch

A man places an ad in the local newspaper as a handyman.  He advertises himself as a 'Spare Husband'.  Once he gets a woman to set up an appointment with him, he goes to her house to scout out her situation.  If he finds that she lives alone, he goes back in the middle of the night and rapes and murders her.  He has killed four women before the police are able to pin the murders on him.  He gets into a shootout with the cops, killing two of them before being killed himself.