There were too many doors in the upstairs hall. Sarah told her parents, but they couldn’t see it. They told her not to worry. They told her there was nothing there. But there was an extra door, at the end of the upstairs hall. An extra yellow door, and it didn’t belong. It was the color of disease, jaundiced and infected, with spidery black veins across its face. One perfect silver knob gleamed in its center above a shadowy keyhole, and it didn’t look right. The doorknob shone with a mirror’s finish, and caught the light from any angle, begging for Sarah to look its way. Sarah did her best to ignore it, but the door knew her name, and…