In Part 2 of our conversation with Academy Award-winning filmmaker Alex Gibney, he discusses in detail his new set of documentaries that premiere April 15 and April 16 on HBO in The Dark Money Game series, which investigate the origins and impacts of campaign finance in the U.S. Building on reporting by Jane Mayer of The New Yorker, in Ohio Confidential, he tracks the corruption case of former Ohio House Speaker Larry Householder, and in Wealth of the Wicked, he looks at the history of campaign financing and what led up to the Citizens United decision of 2010.