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Under the Radar: The Terror Threat Next Door

Could the brothers have been working on their own, or were they part of a larger terrorist group?
05:47 | 04/19/2013

Transcript for Under the Radar: The Terror Threat Next Door

So the question tonight who are these Brothers and how did they transformed from boys and Boston to alleged bombers. Dan Harris has been working his sources all day and he -- we found out. I never --... See More
This transcript has been automatically generated and may not be 100% accurate.
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2020 (4.19.13)
Watch the Full Episode
20/20 4/19: Capture of Boston Bomber
Searching for Dzhokhar Tsarnaev; The Terror Threat Next Door
Manhunt: Searching for Dzhokhar Tsarnaev

Manhunt: Searching for Dzhokhar Tsarnaev

Manhunt: Searching for Dzhokhar Tsarnaev

With Boston locked down, Brian Ross reveals who Tsarnaev is and how he became an alleged killer.
Under the Radar: The Terror Threat Next Door

Under the Radar: The Terror Threat Next Door

Under the Radar: The Terror Threat Next Door

Could the brothers have been working on their own, or were they part of a larger terrorist group?
Rewind: Tracing the Bombers? Steps

Rewind: Tracing the Bombers' Steps

Rewind: Tracing the Bombers' Steps

Part 1: Deborah Roberts reviews the week's events and clues, from the bombing to the manhunt.
Rewind: Homing In

Rewind: Homing In

Rewind: Homing In

Part 2: Authorities used cellphone photos and videos to isolate two young suspects in baseball caps.