 George sends a hitman after Isaak, who is disposed of by Dexter.Now aware that he is no longer welcome in the Koshka Brotherhood, Isaak begins operating alone (with Jurg as his sole aide), with his only purpose left in life being to kill Dexter.Two of the Koshka Brotherhood's top hitmen, Oleg Mickic and Benjamin Caffrey, are sent to Miami to kill Isaak.