Harry Barnett

Harry Barnett, a middle-aged failure, leads a shabby existence. He is reduced to caretaking a friend's villa on the island of Rhodes and working in a bar to earn his keep. Then a guest at the villa - a young woman he had instantly warmed to - disappears on a mountain peak. Under suspicion of her murder, Harry becomes obsessed by the mystery that has changed his life and begins to trace back the movements and encounters that led to the moment where she vanished into the blue.

When Harry Barnett is informed that his son is in hospital in a diabetic coma, he is certain that there must be some mistake, since he does not have a son. But he soon discovers that he does. David Venning was a brilliant mathematician, and his tragic condition is taken to be the result of an accident or a suicide attempt.

Harry Barnett thought he had left his military career behind, so he is startled when two figures from his past turn up on his doorstep after 50 years. An old friend has organised the reunion to end all reunions: a weekend in the Scottish castle where the ex-comrades took part in a psychological experiment many years before. They haven't seen each other since. As they set off on their all-expenses-paid jaunt to Aberdeen, the old friends are in high spirits. But the cheerful atmosphere is quickly shattered by the apparent suicide of one of their party.