That+Strange+Knocking+Sound---Sarah+10

===My family had gone to the store, so I was alone in my house when I heard a knocking sound comeing from upstairs. I didn't know what to do so at first I just ingnored the nose,but it keept getting louder and louder. I paniced I ran to the phone and diled my moms number then all of a sudden I hertd a ringing sno===