In this scene Mr.White is upset because he doesn't want Mrs.White to answer the door. Mr.White knows that what behind that door is inhumane.Mr. white also knows what behind that door isn't there to be his friend.
This scene Mr.White sees what is behind the door. Mrs.White wasn't looking outside of the door and was looking at her husband. Mrs.white was creaming at her husband because she still hadn't seen what was entering the home as Mr.White was screaming look behind you.
After Mr.White screamed look behind you Mrs.White turned around and screamed because the creature was not her son like she was hoping it to be. Mr.White yelled at the creature.The creature killed Mr.white and Mrs.white started crying. After Mrs.White stared crying the creature disappeared into thin air and never came back.