Thor once more drew out his hammer, and held it before him in the thoughtful and abstracted manner she had seen a few minutes before in her flat. He frowned, and seemed to be picking tiny invisible pieces of dust off it. It was a little like a chimpanzee grooming its mate, or – that was it! – the comparison was extraordinary, but it explained why she had tensed herself so watchfully when last he had done it. It was like Jimmy Connors minutely adjusting the strings of his racquet before preparing to serve.
