The risqué private life of Chicago mob gangster and spy, Sam Giancana gets unwanted attention from the FBI and the press just as the CIA prepares its top-secret invasion of Cuba at the Bay of Pigs.

Facing political humiliation, the Kennedys double down on their plot against Castro. Meanwhile, things get personal for gangster spy Johnny Roselli and he decides to take matters into his own hands.

Conflict between the US and Castro boils over when the CIA's actions in Cuba lead to a nuclear showdown with the Soviets. Roselli must contend with news of a national tragedy in Dallas.

"You talk, you die." The fallout begins as Johnny Roselli, Sam Giancana and the CIA face the music as the lid blows off their scandalous involvement in the Castro assassination plots.