Christopher Greyis from London, England. He has worked as a waiter, a hotel manager, a hospital porter, a jeans salesman, a rock musician, and a tour operator. This is his first book. Originally inspired by a visit to theLast Supperin 1992, it was not until he came into possession of an old, faded copy of Leonardo's Notebooks that the story began to take shape . The rest is -- almost -- history.Grey, Christopher Peter is the author of 'Leonardo's Shadow', published 2008 under ISBN 9781416905448 and ISBN 1416905448.