Sergei Cristo starts making enquiries into the mysterious new diplomat whose conversation over tea at the Carlton club has raised red flags. And what his friends, Marina Litvinenko and Oleg Gordievsky, tell him only increases his anxiety. Meanwhile, a new organisation launches - Conservative Friends of Russia - at the gardens of the Russian Embassy in London, just days after members of Pussy Riot are imprisoned in Moscow.

A Project Citizen & The Citizens production.

To find out more about the story and issues it raises visit www.the-citizens.com

Presented by: Carole Cadwalladr and Peter Jukes

Written by: Carole Cadwalladr and Peter Jukes with Ruth Abrahams

Producer and Sound Design: Ruth Abrahams

Studio Producer: Sean Byrne Roberts

Location Producers: Sheridan Flynn and Manasa Narayanan

Original Music: Phil Channell

Mixed: Nigel Appleton

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