Archive footage, chilling reenactments and exclusive interviews shed new light on a tragedy — and two brothers — that suspended a city in terror.
Dzhokhar Tsarnaev is cornered into an intense standoff. As officials navigate remaining questions and suspicions, the city emerges – Boston Strong.
The brothers' images are released to the public, setting off a violent chain of events. Meanwhile, clues from their past tell a complicated story.
In the hours after the blasts, investigators pore over evidence. One photo and a few seconds of footage lead to a breakthrough – and an agonizing choice.
