Rufus is paid a visit by Mason and the Rittenhouse Agent, who assigns his team to go after Flynn to June 20, 1972, the start date of the Watergate scandal, and to make contact with someone in 1972. During the scandal, President Richard Nixon had conversations in the Oval Office recorded, but 18½ minutes of the tape had been erased by his secretary. The team intends to prevent Flynn from obtaining the lost recording, but Flynn captures them shortly after they arrive, revealing that he has the tape. He plays a recording of Nixon talking about Rittenhouse, and orders Lucy and Rufus to find a missing "doc" Nixon referred to on the tape within five hours to save Wyatt's life. Rufus, however, is ordered via telephone to "destroy the doc" by his contact. Flynn reveals to Wyatt that while he was in the NSA, he intercepted a series of financial transactions between Rittenhouse and Mason Industries, but when he reported this to his superiors, Rittenhouse had his wife and daughter murdered; since then, he swore to destroy Rittenhouse through time travel. He also reveals that Rittenhouse was founded in 1778. Using intel obtained from Mark Felt a.k.a. "Deep Throat", Lucy and Rufus are led to the D.C. branch of the Black Liberation Army and discover that the "doc" is a woman with a doctorate in history, and a former member of Rittenhouse who knows the organization's entire roster. Tensions rise when Lucy discovers that Rufus has been carrying a recording device throughout their travels. Caught between their orders involving the doc, Lucy and Rufus escort her to a drop-off point after revealing her hideout to both Flynn and Rittenhouse, resulting in a gunfight between both sides while Lucy rescues Wyatt. The trust between the trio is strained after they discover each other's secrets and motives. Back in the present day, the Rittenhouse agent questions Rufus over his actions in 1972 and reveals that he was the was contact. Lucy decides to pay her father, Benjamin Cahill, a visit, having put it off earlier. The man who opens the door is the Rittenhouse agent, though she does not know this. She speaks briefly to him but leaves without introducing herself. He promptly makes a phone call to inform someone that Lucy has just visited him.