6/6 Samuel learns the truth about the Shaws and the MI5 men.
5/6 After the shooting, Field places the Petruhkin home and factory under protection.
4/6 Samuel doesn’t know who to believe – could he be meeting enemies of the state?
3/6 Kathleen visits Sacha’s school to see if she can glean any clues about Anthony.
2/6 Samuel meets two men from MI5 who are interested in his invention and is sworn to secrecy.
1/6 During the tumultuous summer of 1958, Samuel prepares to launch his new invention.