The Turing Protocol

If you had the power to change history, would you dare? For readers of Dan Brown, Matthew Reilly and Fiona McIntosh, The Turing Protocol blends historical fact with fiction to tell the extraordinary story of a machine that allows the user to send messages to the past - and may just save the future.

In the midst of World War II, Enigma codebreaker Alan Turing has created a machine named Nautilus that can send a message back into the recent past. After Turing uses it to help the Allied forces succeed on D-Day, he sees the power (and potential danger) of what he has created. He knows he can only entrust it to one person: Joan, the mother of his secret child.
Over the next seventy years, the Nautilus is passed down through the Turing family, who all must decide for themselves when to use this powerful invention. Will it save the world - or destroy it?