Francis Croft, the greatest poet of his age, was mad. His world was a nightmare of internal furies and haunting poetic vision. Harvey Lawson watched and protected him until his final suicide. From his solitary old age Harvey writes this brief account of their 20 years together and then burns all the papers to shut out an inquisitive world. The tautness and control that characterise Susan Hill's work are abundantly evident in The Bird of Night as she magnificently handles the heights and depths, the splendours and miseries of madness and friendship.