When Ari Adamian has no recollection of his actions, Briggs helps the Armenian gangster piece together the disturbing details of his lost night.

Johnny goes undercover to stop a gang war; Jakes and Charlie set out to take over Germaine's business; and Mike begins to piece together Briggs' plan.

The feud between the Sarkissians and a local gang heats up; Briggs' motives are revealed; and Mike hunts for the sarin gas.