Just found this thread and love it.
Does anyone think there's any possibility the TMK could be Mike? Might seem strange being Sonny's father but GH has done some strange things like all those years ago when they made the old police commissioner (I think his name was Burt Ramsey) "Mr Big" or something like that. At the time he never would have been a suspect, but then, there he was.
Just thinking that so far all of the victims and attempted victims have been connected to Sonny except Georgie & Maxie.