A Perfect Spy
Episode Four (1x4)
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Rick crashes his son's wedding to Belinda and offers them the gift of a new car, which is immediately impounded. Recruited by the Foreign Office, Magnus is sent to Prague where after making a pick-up from a dead-letter-drop he is arrested by Axel, blackmailed into exchanging further secrets, and reintroduced to Sabine who joins his network of planted agents.
Abandoned by his long neglected wife and reposted to Berlin, Magnus begins to court Jack's girlfriend Mary. Late one night he is summoned to police headquarters where he discovers his father is being held in the cells for yet another bungled con job. Axel encourages Magnus into marrying Mary in the belief that the girl may help them gain access to their eventual target, the Americans.