Having tackled corporate corruption in Enron: The Smartest Guys in the Room (2005), and US torture policy in Taxi to the Dark Side (2007), Oscar-winning documentary-maker Alex Gibney has turned his attention to the incendiary issue of child abuse in the Catholic Church.

Oscar -winning filmmaker Alex Gibney explores the abuse of power in the Catholic Church through the story of four courageous deaf men, who in the first known case of public protest, set out to expose the priest who abused them.

Through their case the film follows a cover-up that winds its way from the row houses of Milwaukee, Wisconsin, through the bare ruined choirs of Ireland's churches, all the way to the highest office of the Vatican.