The BBC is to broadcast a Panorama special examining Newsnight's decision to drop an investigation into Jimmy Savile's alleged abuse of children.
The programme, expected to be broadcast on Monday night, will see one BBC flagship examine the apparent failings of another as the corporation aims to answer questions of editorial integrity.
The Panorama special could result in more difficult questions for Director General George Entwistle when he appears the next morning at the Commons select committee for Culture, Media and Sport.
The BBC has already announced two inquiries: one into its culture and practices, led by Dame Janet Smith, and another by former Sky News boss Nick Pollard probing why Newsnight dropped its programme into Mr Savile's alleged sex abuse.
It is believed Panorama has an extensive email chain between Newsnight staff including editor Peter Rippon and his investigative reporters who include Liz MacKean and Meirion Jones.
The correspondence is understood to show that Newsnight reporters were focusing on the entertainer's alleged abuse and not, as the corporation later stated, Surrey Police's decision to drop its investigation into the presenter.
