This episode recounts the 1961 assassination attempt on Fidel Castro by Marita Lorenz, a former lover recruited by the CIA. After a traumatic pregnancy and miscarriage, Lorenz smuggled poison into Cuba to kill the Prime Minister. However, the capsules melted in her cold cream, causing a frantic struggle to flush them down the toilet just as Castro arrived. When he discovered her intent, he handed her a gun, but she was unable to pull the trigger, leading to his famous declaration that no one could kill him.