A rough night turns into an even rougher day: A desperate João on the edge of exposure turns to Carolina for help. Bill discovers a truth about Doc.

From the bitter to the smooth: João looks back — and forward. Anne gets bad news, and Gonçalo hits pay dirt. All roads lead to an explosive end.

The war heats up on all fronts while James questions João, Fernando comes under fire, and Henrique scores a key position. The CIA go on a mole hunt.

Under a microscope, João must think fast at the hospital. Anne airs her suspicions. Alexandre questions Doc. A trip to a psychiatrist yields a secret.

Sofia returns to the scene of the fire. Parker makes his presence known at RARET. A conflict combusts as João tries to get to the heart of a killing.

Danger closes in: James tries to track the culprit behind the missing reel. Ursula sticks her neck out for João, who's haunted by memories of war.

The craft gets complicated, quickly, as João eavesdrops then confronts Gonçalo. At the keyboard, Alexandre shows his hand and reveals his suspicions.

After the autopsy, James applies pressure to Doc. Anne's sultry soiree serves up food, drink — and intel. Sparks fly when Carolina realizes a dream.

Will he fete — and flip? James asks João to escort a defecting Soviet scientist. Carolina finds a refuge, and the mystery around Mia persists.

In 1968, João begins his new job at RARET in Glória do Ribatejo, at the front of a Cold War fight for hearts and minds. But he has a larger mission.