LONDON, ENGLAND – OCTOBER 20: Director and screenwriter of Mea Maxima Culpa: Silence in the House of God, Alex Gibney receives the Grierson award for Best Documentary during the 56th BFI London Film Festival Awards at the Banqueting House on October 20, 2012 in London, England. (Photo by Ian Gavan/Getty Images for BFI) *** Local Caption *** Alex Gibney