In 2010 the body of young MI6 agent Gareth Williams was found locked inside a holdall. Scotland Yard was called in to investigate, but from the beginning it was clear that MI6 wanted detectives to keep their distance. Some claim that Gareth somehow climbed into the bag and died by accident...but that doesn’t explain how it got locked from the outside. Was Gareth Williams’ death the result of a foreign intelligence hit? And if so, how could Scotland Yard possibly investigate it without upsetting the most powerful espionage agencies in the world?

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