Call of the Wendigo

When Kenny was a kid, he would see a shadow outside the front door. He tried to tell his parents what he saw, but as in most cases, they didn't listen to him. He stays awake to find out what is outside the door every night. He watched and waited. Kenny looked away for what he thought was just a moment, but when he looked back, the front door was open and his parents were screaming. Kenny covers his ears, trying to block out the sound of his parents being murdered right below him, and praying that it doesn't find him.
The screams stop and Kenny opens his eyes as a large black bulk rose up in front of him and screams as sharp claws rake down the front of his chest. That was twenty years ago, and Kenny still has nightmares about it. He dosen't know why he was spared, but now he feels that he must finally go home and find out what happened to his paents.