The phone hacking scandal could be on the verge of taking a much bigger scalp than that of the News of the World - Rupert Murdoch's empire is beginning to crumble around his feet. There can be no easy way out for News International and Murdoch. The hole has been dug, and it is already far too deep to be climbed out of. Like the sacked News of the World journalists many more innocent heads may roll to save those at the top of the empire.