He pointed to one of the photographs. It was a black-and-white picture taken in an office somewhere. A man sat at a desk, while another stood behind him. In the corner was a third figure, wearing a strange costume. The man in costume was diminutive. ‘See?’ he said. She peered at the photograph. ‘Washington,’ he said. ‘The man sitting down is the British ambassador, a man called Archibald Clark Kerr. A very colourful character, which is putting it mildly.

