Been thinking about this song a lot and also about the famous London murderer. I am presently reading The Lodger on the Professor's reader thingy, and it is very suspenseful and entertaining. I recommend it. It is free to read on Project Guttenberg. This song I sing on this video is a cover of Morrissey. Great, great song. I think when I realized what it was about (I always listened to it as a teen not knowing what it meant) I fell over while running on the treadmill.
It is from the murderer's point of view---when he sees a harlot he wishes to murder and how he deceives her into getting alone with him, which isn't hard as she is indeed a harlot. Of course, if you don't know about Mr. Ripper then you should read up on him. He was famous for killing harlots late at night and sometimes taking body parts like uteruses from his victims. He was never discovered. I wonder how The Lodger ends.