Inside my house, there’s a door which should not be there. The first person to notice was my older sister Melanie, as it was in the back of her closet. It was strange—it seemed as though the door functioned as a mirror, leading to a space identical to her closet, even down to the clothes. She was in middle school at the time, and I’d just turned ten. We were fascinated by the doorway, and after a short, poorly-informed conversation, we agreed it needed to be explored. She wen