'Frontline' Investigates How Mumbai Mastermind Slipped...

Aired: 11/22/2011 | 0:07:14 | Clip
The 2008 terror attacks in Mumbai, India, that killed 166 people were masterminded by Pakistani-American David Coleman Headley. Margret Warner and Sebastian Rotella of ProPublica and Frontline discuss how American law enforcement and intelligence agencies missed several opportunities to thwart his plot.