The mother was very upset because her son had died shortly before due to a wish that was made on a monkey's paw. The wish had gone wrong and caused her son to be killed. Her husband stated "please come back to bed, it is cold." and the woman said "It is colder for my son."
The monkey's paw granted three wishes and one of them was already used so there were two more wishes remaining. The woman realized that she can use one of the wishes to bring her son back to life. She gets her husband and tells him to get the monkey's paw.
She tells her husband to wish for her son alive again. The man does not want to wish because he believes that the death of his son and the wish was just a coincidence. He tells his wife that it will not work and she says "YOU KILLED MY SON, NOW WISH HIM ALIVE!!!"
Following his wives request, she goes downstairs, gets the monkey's paw and says "I wish my son alive again"
There is a sudden knocking at the door and the woman runs down stairs crying, "my son! my son!" The man instantly realizes that when the son died, he was mutilated by machinery. When we came back to life, he would be alive, yet still in pieces and not intact.
Before his wife can open the door, he grabs the monkey's paw. With one wish remaining, he wishes his son dead. The woman thrusts open the door to see nothing and she cried at the thought of her son.