Twilight Sparkle has learned an advanced spell that took weeks to master and finally puts it to the test. It works like a DNA paternity test and tries it on her friends to demonstrate. But then she tries it on her family, she discovers something unpleasant. Will this be kept a secret or will it tear Equestria apart into chaos? Better yet will it ruin her sanity?

*Knotwist as editor/proof-reader*