They were a handful of leftover student radicals from the turbulent 60's - brilliant renegade children of affluence, financing their reign of urban terror through a series of daring armored car robberies. For nearly a decade they avoided capture, until justice final triumphed in the wake of a brutal mass murder in downtown Boston. But for the killers' families, the police, the obsessed young Assistant D.A., and the city itself, the nightmare was far from over. . . it had only just begun.