When the F.B.I's special assistant Howie claims to have nearly escaped being shot, Jack and the team are skeptical as to the legitimacy of Howie's story. However Howie's tale becomes more and more plausible as other killings arise, all linked to Howie's incident.

When a radical environmentalist group blows up an SUV, the F.B.I looks into the case with the help of a victim from one of the environmentalist group's earlier fires. Meanwhile, with his cholesterol off the charts, Myles decides to make some changes to his dietary lifestyle.