A bomb placed under a government car parked near a U.S. Army Recruitment Office explodes killing a man and leaving his wife in shock. Don and his team try to stop the bomb makers before more antiwar protests kill more civilians.
Don has to contend with a retired FBI agent who investigated a similar bombing 35 years earlier. The retired agent insists the culprit is an activist that Alan Eppes knew in the 1960s who has been missing since. The retired agent's "old school" style clashes dramatically with the way Don runs his FBI team.