In 1963, Nicholas Elliott (Lewis) is working for Britain's Secret Intelligence Service (SIS) as an intelligence officer and is left in turmoil when he learns his close friend and colleague, Kim Philby (Pearce), has been secretly working as a double agent for the KGB since 1934. Elliot interviews him in Beirut and then Philby defects to the Soviet Union.
Nel 1963, Nicholas Elliott (Lewis) lavora per il Secret Intelligence Service (SIS) britannico come ufficiale dell'intelligence e rimane in subbuglio quando scopre che il suo caro amico e collega, Kim Philby (Pearce), ha lavorato segretamente come doppio agente. per il KGB dal 1934. Elliot lo intervista a Beirut e poi Philby diserta in Unione Sovietica.
