I wrote this my myself! :) Original story: http://creepypasta.wikia.com/wiki/Knock,_Knock,_Knock
also, I'd like to announce that I wrote another story, but it was deleted from the creepypasta wiki, so I've resolved to start a new wiki, where people like you and I can create content without the tyranny of the creepypasta wiki, more info later
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“Knock, knock, knock.” I heard the familiar knocking inside my walls. “Probably just the pipes,”...