For right at the margin he tripped and fell flat. I ran to him.

He had fallen over the body of Denby, which lay there!

Denby had not been there a few moments before, and how he came to be there now we dared not conjecture. Mr. Eltham joined us, uttered one short, dry sob, and dropped upon his knees. Then we were carrying Denby back to the house, with the mastiff howling a marche funebre.

We laid him on the grass where it sloped down from the terrace. Nayland Smith's haggard face was terrible. But the stark horror of the thing inspired him to that, which conceived earlier, had saved Denby. Twisting suddenly to Eltham, he roared in a voice audible beyond the river:

"Heavens! we are fools! LOOSE THE DOG!"

"But the dog—" I began.

Smith clapped his hand over my mouth.

"I know he's crippled," he whispered. "But if anything human lurks there, the dog will lead us to it. If a MAN is there, he will fly! Why did we not think of it before. Fools, fools!" He raised his voice again. "Keep him on leash, Edwards. He will lead us."

The scheme succeeded.

Edwards barely had started on his errand when bells began ringing inside the house.