Content Warning: This episode contains sex references.

Author Robert Verkaik unpicks the complex and fascinating relationship between two giants of the 20th Century - author and screenwriter Graham Greene, and Soviet super-spy, Kim Philby.

When World War Two threw the two men together as MI6 spies, a strange yet enduring friendship blossomed. But how far did their loyalty to each-other go?

From SPYSCAPE, the home of secrets. A Cup And Nuzzle production. Series producer: Joe Foley. Produced by Joe Foley.

Robert Verkaik is the author of The Writer and the Traitor: Graham Greene, Kim Philby and the Great Betrayal.