In the monkeys paw what’s the third event to take place in the story

Their son comes back but, it's to late.

Explanation:

Mr. White retrieves the paw from its place downstairs. Mrs. White orders him to make the wish two more times until he finally complies. He makes the wish, and as they wait, the candle goes out. They hear the clock, the creak of a stair, and the sound of a mouse. At last Mr. White goes downstairs. His match goes out, and before he can strike another, he hears a knock at the door. Another knock sounds, and Mr. White dashes upstairs. Mrs. White hears the third knock and says it’s Herbert. She realizes he hadn’t returned right after the wish had been made because he’d had to walk two miles from the graveyard to their house.

Mr. White begs her not to open the door, but she breaks free and runs downstairs. As she struggles to reach the bolt, the knocking becomes more insistent. Mr. White searches frantically for the paw, which had dropped to the floor. As Mrs. White pulls back the bolt, Mr. White finds the paw and makes a final wish. The knocking stops, and Mrs. White cries out. Mr. White dashes downstairs and sees that beyond the door, the street is empty.