UGLY: Heads UP in Philly!
According to the Philadelphia PD, they're dealing with a serial killer on the loose. I know from my own studies (got my degree in Criminal Justice as well as having worked in the field) that at any given time, there are at least 50 serial killers doing their deeds nationwide. Many are not identified by law enforcement because they tend to range over large swaths of territory and cross state lines, etc. They may stop for awhile for who knows why -- maybe arrest on non related things, but then they pick it up again. Where the cops and feds can identify a signature and a specific area they go to work in a task force. Like the Green River Killer way back when. Or the Boston Strangler even further back.