The man who killed two of his girlfriends, stabbing the last one 24 times, and who was described by his father as “demon possessed” was sentenced to the rest of his natural life behind bars yesterday. The whole life sentence was imposed on Patrick Nathanial Leacock by Justice Pamela Beckles when he reappeared in the No. 5 Supreme Court yesterday. “Your attack was brutal. It was an overkill, as described …