198. Kim Philby: Interrogated by MI5 (Ep 3)
Oct 4, 2026 · 50m
Summary
This episode details Kim Philby’s return to London in 1951, where he faces intense scrutiny from MI5 and pressure from the CIA to leave MI6. The narrative explores the conflicting investigations, highlighting the rivalry between MI5’s Arthur Martin and MI6’s defenders, while Philby endures harsh interrogations and a period of personal decline. As the 1950s progress, the "Third Man" theory gains traction, leading to Philby’s name being exposed in Parliament and his subsequent public denial. The story also examines the impact of spy fiction on real-life investigations and the tragic mental he…
Topics discussed
Introduction: The suspicion of Kim Philby
Sponsor segments: HP, Wise, and NordVPN
Philby returns to London and faces initial suspicion
Interrogations with Dick White and the 'Third Man' theory
CIA memos: Harvey vs. Angleton on Philby's guilt
American pressure forces Philby's removal from MI6
Philby's erratic behavior and the 1951 black cab incident
Arthur Martin and the MI5 mole hunt strategy
The Milmo interrogation and Soviet radio traffic evidence
Milmo's conclusion: Philby is a Soviet agent
MI6's defense of Philby and the Red Scare context
Philby's reputation among MI6 colleagues
Sponsor segments: Tremfya and Zepbound
Aileen Philby's mental health crisis and suspicions
Surveillance, isolation, and the mechanics of mole hunts
The 'Third Man' label and Graham Greene's influence
The 1955 parliamentary inquiry and Foreign Secretary's statement
Philby's press conference: A masterclass in deception
Philby's return to journalism and MI6 support
Conclusion and preview of the final confrontation
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