Investigative documentary filmmaker Alex Gibney-best known for 2008's Oscar-winning Taxi to the Dark Side, Enron: The Smartest Guys in the Room, and at least a dozen others-turns his sights on the 1994 Loughinisland massacre, a cold case that remains an open wound in the Irish peace process.

The families of the victims-who were murdered while watching the World Cup in their local pub-were promised justice, but 20 years later they still didn't know who killed their loved ones. Gibney uncovers a web of secrecy, lies, and corruption that so often results when the powerful insist they are acting for the greater good.