American Terrorist (2015) | How US agencies missed catching the plotters behind the 2008 terror attack in Mumbai and how David Headley, a former DEA informant, played a key role in the plot | 1:23:16

FRONTLINE and ProPublica investigated how secret electronic surveillance missed catching the plotters behind the deadly 2008 siege in Mumbai and how American-born David Coleman Headley, a former DEA informant, played a key role in the plot.