DATELINE to Air 'Terror in Boston: The Hunt for Answers,' Tonight

On Wednesday April 24 at 8pm/7c NBC's DATELINE will devote a full hour to the latest in the investigation of the Boston Marathon bombings. "Dateline" goes inside the story to answer the urgent questions about the case that still remain unanswered. The broadcast reveals new details of how exactly the bombings happened, who the suspects are, and where the worldwide investigation will go from here.

Lester Holt takes viewers through the events of the last ten days, including The Killing of M.I.T. campus police officer Sean Collier, the carjacking, the violent Watertown shootout, and the final takedown of the suspected bomber. In addition, "Dateline" provides new information from those who knew and interacted with the Tsarnaev brothers.

Holt sits down with Jacqui Webb, a victim severely wounded in the blasts, for her first and only interview since the attack. Webb credits her boyfriend, Paul and his brother, JP for saving her life. Both brothers lost a leg that day. Boston Police Commissioner Ed Davis opens up to Holt about what he thinks the suspected bombers were planning next; Cambridge Police Commissioner Robert Haas gives "Dateline" a detailed account of the shooting of 27-year-old Sean Collier; Watertown Police Chief Ed Deveau shares revealing information about the shootout; eyewitnesses share their step-by-step recollections of the late-night firefight on Laurel Street.

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