Pieces of a broken medallion are the only clue to an unknown assassin who is on a deadly rampage in central city.

After a disabled boy dies of smoke inhalation during a fire, his parents and a building tenant with a history of “”accidental”” fires become suspects.

The cops uncover a man with a secret second life as they try to learn who opened fire on a group of people disembarking from a party cruise, but his…