'Murders Before the Marathon': A new documentary examines Waltham slayings and Boston Marathon bombing

The jury in the Boston bombing trial was shown distant surveillance video of Dzhokhar and Tamerlan Tsarnaev approaching Officer Sean Collier's patrol car before he was killed

Police: Tsarnaev's sister threatened rival with bomb

Boston Marathon Bombing: Tamerlan Tsarnaev's Wife Katherine Russell Being Investigated

Katherine Russell: Married to a Suspected Terrorist

Boston bombing survivor to run marathon

Boston Marathon: 10 years since bombing

The stories of the Boston Marathon bombing, 10 years later