When the Cutie Mark Crusaders dig up an ancient magical artifact, they unleash a spell on the town that allows everypony to see a "lie meter" floating above each other's heads. While attempting to solve the mystery, Twilight Sparkle has to analyze the tenuous balance between friendship and honesty. She doesn't like what she finds.

Reader - https://www.youtube.com/channel/UCcZkh_7aAgDL5Y7TS2sav3g

Story - http://www.fimfiction.net/story/88575/the-numbers-dont-lie