Watch At the Devil's Door movie online on 123movies, When ambitious young real estate agent Leigh is asked to sell a house with a checkered past, she crosses paths with a disturbed girl whom she learns is the runaway daughter of the couple selling the property. When Leigh tries to intervene and help her, she becomes entangled with a supernatural force that soon pulls Leigh's artist sister Vera into its web - and has sinister plans for both of them.