Grace is investigating an antigovernment faction and trying to form an alliance with a young female drug user who shares a connection with angelic Earl. But Grace's haphazard investigation goes awry, resulting in an injury to the woman. Meanwhile, Grace and Ham get caught in an embarrassing situation; and Butch offers surprising news.

A case turns explosively personal for Grace when a bomb detonates at her brother's church. Meanwhile, family problems haunt Rhetta, who seeks comfort by searching for a nostalgic time capsule she and Grace buried as children. And Grace keeps a bedside watch on Neely.