Most blog posts and cinematic reviews focus on this historical drama directed by Dominic Cooke.
“Benedict Cumberbatch is perfect in his role as a bored and stubborn Briton... he manages to identify with Greville Wynne even in the most violent and dramatic second part of the film.” Anonima Cinefili
Alternatively, the title refers to a prominent investigative report by the show Report titled "L'ombra delle spie" (The Shadow of the Spies), which aired in late 2025.