There was once a little girl that hated life and she wanted to get rid of every trace of herself off the planet. Soon, She killed herself and people found out. The people that found out died a few days later. Their limbs torn apart. They say if you know of The White Death, She will come and find you and constantly knock on your door. Each knock gets louder. You can't tell anyone about her, But if you do, She strikes. Killing you and then goes for the person you told. My friend told me of the White Death and i always hear knocks on my door. I can't take it anymore so i'm telling you people so it can stop. She doesn't want anyone to know about her, Thats why she kills. Now that you know of her, She'll be coming for you. Don't tell anyone you'll be torn apart limb..by limb. I'm sorry i told you this... no matter where you go, She will find you and keep knocking till you kill yourself. Or you tell someone else.

http://theunexplainedmysteries.com/White-Death-Urban-Legend.html