Ok,so its 1:20am,my parents are at the store I believe getting my sis and brother b-day presents,and Christmas presents for our grand parents that are comeing over tomorrow to visit.Anyways,so I'm alone baby-sitting my 7 younger brothers and sister,and I'm down in the family room and everyone elseis sleeping.Well,I thought I heard like water running,just the noise that faucets make when their turned on.so I thought my sis was going to the bathroom(theres kinda 3 floors,and my sis and my bedroom,along with our parents bedroom are on the top floor.the boy's bedroom is on the bottom floor off of the family room)then I hear someone walking around upstairs,I go to see if my sis is ok.I go upstairs to find out,she's not even awake!sersiously.....so i just thougtht that she went back to sleep right away as if she's sleep walking.