“I want you first of all to help me in watching this boy, and ensuring that she does not come near him. Eventually I want you to help me in tracking the thing down, in exposing and destroying it. It is not human: it is an incarnate fiend. What steps we shall have to take I don’t yet know.” It was now eleven of the forenoon, and presently I went across to his house for a twelve-hour vigil while he slept, to come on duty again that night, so that for the next twenty-four hours either Urcombe or myself was always in the room where the boy, now getting stronger every hour, was lying. The day following was Saturday and a morning of brilliant, pellucid weather, and already when I went across to his house to resume my duty the stream of motors down to Brighton had begun. Simultaneously I saw Urcombe with a cheerful face, which boded good news of his patient, coming out of his house, and Mrs. Amworth, with a gesture of salutation to me and a basket in her hand, walking up the broad strip of grass which bordered the road. There we all three met. I noticed (and saw that Urcombe noticed it too) that one finger of her left hand was bandaged. “Good morning to you both,” said she. “And I hear your patient is doing well, Mr. Urcombe. I have come to bring him a bowl of jelly, and to sit with him for an hour. He and I are great friends. I am overjoyed at his recovery.” Urcombe paused a moment, as if making up his mind, and then shot out a pointing finger at her. “I forbid that,” he said. “You shall not sit with him or see him. And you know the reason as well as I do.” I have never seen so horrible a change pass over a human face as that which now blanched hers to the colour of a grey mist. She put up her hand as if to shield herself from that pointing finger, which drew the sign of the cross in the air, and shrank back cowering on to the road. There was a wild hoot from a horn, a grinding of brakes, a shout--too late--from a passing car, and one long scream suddenly cut short. Her body rebounded from the roadway after the first wheel had gone over it, and the second followed. It lay there, quivering and twitching, and was still.