The phone-hacking scandal that took down British tabloid newspaper 'The News of the World' and could now threaten the parent company behind Fox TV, has reached all the way up to the top of the corporate power structure.

Today, News Corp. Chairman and CEO Rupert Murdoch, his son James and former senior executive Rebekah Brooks will be quizzed by British MPs on what they knew about the phone hacking allegations engulfing News International, the British arm of Murdoch's global empire, and whether there was a cover-up.

They are not the only ones facing questions today. Two former high-ranking police officers will also be appearing. Sir Paul Stephenson resigned as Metropolitan Police Commissioner Sunday night, and John Yates quit his post as an Assistant Commissioner Monday.