CNN Presents:

Season 2012

Episode 5: Sun, Mar 4

Topics include the use of military veterans as test subjects for chemical experiments at a Maryland military facility from 1955 to 1975; and the role of social media, lawyers and lobbyists in the process of conferring sainthood in the Catholic Church. Also: profiles of Mexican journalists Adela Bello and Javier Valdez Cardenas, who report on the government corruption, gang violence and crime behind their country's drug wars.