What kind of ghost would open my living room door and walk up the stairs to my room knock 3 times walk back into my living room and scream a blood curdling scream open door back up to my room knock 3 times go back downstairs into my living room and scream. It done this cycle 5 times until my friend pulled into my driveway at the same moment I heard it coming back up the stairs and it disappeared..and the scream sounded female..that b a banshee or hag? Any help b great..it never happened before or again but has me stressed