As if in answer to his words there rose suddenly out of the vast gloom of the moor that strange cry which I had already heard upon the borders of the great Grimpen Mire. It came with the wind through the silence of the night a long deep mutter then a rising howl and then the sad moan in which it died away. Again and again it sounded the whole air throbbing with it strident wild and menacing. The baronet caught my sleeve and his face glimmered white through the darkness.