Bob Lee visits a friend of Earl's to ask about a rogue operation in Vietnam; he joins his team to crash an event in D.C., where they cross paths with an operative on a mission of his own.

Closing in on the mystery of his father's assassination and its connection to Washington's power brokers, Bob Lee and Isaac track down a former "dark lord" of the Pentagon - now residing in a psychiatric hospital. Nadine is sent on a dangerous mission by a DOJ Agent.