The episode masterfully balances three parallel timelines, each serving as a different kind of interrogation:
In the second episode of A Spy Among Friends , titled the narrative tightens its grip on the psychological fallout of Kim Philby’s defection. If the premiere was about the shock of betrayal, this hour is about the agonizing post-mortem—the "how did we miss this?" that haunts Nicholas Elliott and consumes investigator Lily Thomas. The Three-Way Interrogation A Spy Among Friends subtitles English S01E02
The episode's namesake refers to a meeting in 1941 where Elliott shadowed Philby to a pub, only to find him with a woman named Litzi. Philby easily explains her away as a "romantic adventure" from his time fighting fascism in Vienna. A Spy Among Friends subtitles English S01E02