A gym owner is killed when he's trapped in his own sauna, so the team investigate the world of fitness extremists and uncover an unanticipated threat.
The team receive the Number of a UN diplomat being stalked by a former government contractor. Meanwhile, Root faces an enemy from the past.
While Ryan tries to track down Joe's mentor, Joe, Emma, and Mandy start adapting to their new life at the compound.
Nucky gets troubling news while visiting the Republican National Convention in Chicago.