More doppelganger story than ghost. These are not the exact coordinates for privacy reasons but the general area of my grandparent's house. So the way the house is set up there is a hallway with the room my mom was staying in and the room I was staying in (my moms was further down the hallway) and me and everyone else in the house (except my mom because she was in her room) was in the living room outside the hallway. I had been sitting in the living room for a few hours and hadn't gotten up once, nor had any of my family members. my mom walked out into the living room and turned around when she saw me. she started denying what she saw without telling us. she told us a few minutes later and she said that she saw me walk into my room and shut the door, however I was on the couch and like I said before had been for hours. we all walked into my room and there was nobody there. my great grandma died in the house a few years prior to this and it is a fairly old house.