Bob Shaw is baffled to see a man in a brown coat at a bustling Underground station. Surely it can't be his friend, the scientist Professor Morley? Morley perished weeks before in a blazing car. Is the man an impostor or did his friend fake his death? This fascinating and ingenious thriller tells of Bob's battle to find out the truth, helped by his wife Anne. They are confronted by ruthless enemies and forced to flee their home in this fast-paced spy thriller from the author of 'Smile of the Stowaway'.