Summer of Rockets

In the UK during the tumultuous summer of 1958, Samuel Petrukhin, a Russian-born Jewish inventor and businessman, specialises in manufacturing hearing aids. Following the Soviets' launch of the first intercontinental ballistic missile, and the start of the Space Race, fear permeates the lives of all.

Hannah arrives at Buckingham Palace, but is too late to be presented. Samuel meets two men who are interested in his invention - Denning and Mr Field. He learns that they are from MI5 and he is sworn to secrecy. The Petrukhins attend a fete at the Shaw's.

Samuel is tasked by Mr Field to find out the names of those attending the Shaw's latest party. After the party, Mr Field and Denning are unhappy with Samuel's lack of detail. Courtney breaks it to Samuel that the company is close to bankruptcy.

Kathleen visits the boarding house in search of Anthony, but has no luck. Armstrong explains to Samuel that they have reason to believe that people connected with the Shaw family could be enemies of the state. Not knowing who to believe, Samuel confronts Mr Field.

After the shooting, Field places the Petruhkin home and factory under protection. Samuel makes his own plans and goes into hiding where he meets Kathleen in secret.

[Final Episode] Samuel learns the truth about the Shaws and the MI5 men. His is invited to an extraordinary secret meeting, while Hannah becomes increasingly worried about her father's safety.