we're not talking about a single case or incident. we're talking about what became a way of life that caused incalculable harm to their victims and families, to the city of boston and the nation's top law enforcement, the fbi. there were so many tipoffs and cover-ups. he had a license to kill in effect. >> so how did they finally find him? >> that was the 2011 surprise in santa monica, california. he was living under the radar as an apparent retiree with his girl friend. periodically on cnn there are public service announcements regarding he was the fbi's most wanted at that point and someone from santa monica, a woman from iceland, who vacationed in santa monica, recognized his girl friend. that set in motion very quickly his and senpprehension in the n