New series. Drama series set in the UK during the Cold War period. The series follows Samuel Petrukhin, a Russian-Jewish inventor and designer of bespoke hearing aids, and his family, as he is approached by MI5 to demonstrate his work and is tasked with a secret mission. During the tumultuous summer of 1958, Samuel prepares to launch his new invention - which is attracting some suspicious followers - before meeting the mysterious Kathleen. Starring Toby Stephens, Keeley Hawes and Linus Roache.