“Man’s marvellous light,” said Sir Robert. “Edwin, you said it was by—Dumas? Something?” “Dufay,” said Edwin in his teaching voice. “Alfred Dufay. The song told you. Blast, I hate riddles.” “No, you don’t,” murmured Sir Robert. Edwin reached out without breaking his hungry perusal of the letter and flicked the back of Sir Robert’s hand, winning himself a smile that he didn’t notice.

