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The Turing Test
The Second World War is drawing to a close. Alan Turing, the code-breaker who has been critical to the allied war effort, is called in to break a mysterious new cypher. It's coming from Germany, and everyone assumes it is German — everyone except Turing's new friend, the Doctor. Indeed it seems the Doctor knows too much about the code and the code-makers — and when people start to die, even Turing wonders if the Doctor is the one to blame.
Graham Greene, novelist and spymaster, has also encountered the Doctor, and thinks he's a rum enough chap, but in a remote African village he has encountered something far stranger.
To find out the truth, they must all cross the front line and travel through occupied Germany — right into the firing line of the bloodiest war in history. What they find there has no human explanation — and only the Doctor has the answers. Or maybe, they're just more questions...
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