2/6. The secret service tasks Samuel with spying on the Shaws in exchange for an order of his invention, and Hannah discovers that Kathleen has a tragic family secret. [S,AD]
1/6. In the summer of 1958, an inventor is tasked with a mission by MI5. Following the Soviets launch of the first intercontinental ballistic missile, fear permeates the lives of all. [S,AD]