1950s Berlin is a torn city, and ripe for espionage, allowing encrypted messages to pass both ways across the barriers. The Russians are somehow staying ahead of the Americans, and the Sorcerer is determined to unearth the mole. But his identity will rock the foundations of the CIA and affect its policies for years to come.

Budapest 1956 and Cuba 1960. While the Soviet Union barely masks its takeover of countries of interest, the CIA works behind the scenes to aid the resistance movements, and Jack is caught between politics and a just cause as Washington weighs whether to honor its promises.

1975 and 1987 Washington, D.C. and Moscow. The game escalates against the Vietnam war and Gorbachev's rise to power; the web begins to tighten around Sasha, whilst Yevgeny and Jack face personal betrayals and a retired agent holds the key to breaking the Soviet Union's master plan.