A spy named orphan: the enigma of Donald Maclean

Donald Maclean was a star diplomat, an establishment insider and a keeper of some of the West's greatest secrets.

He was also a Russian spy, driven by passionately held beliefs, whose betrayal and defection to Moscow reverberated for decades.

Christened 'Orphan' by his Russian recruiter, Maclean was the perfect spy and Britain's most gifted traitor.

But as he leaked huge amounts of top-secret intelligence, an international code-breaking operation was rapidly closing in on him.

Moments before he was unmasked, Maclean vanished. Drawing on a wealth of previously classified material, Roland Philipps now tells this story for the first time in full.