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...
Artwork provided by K Damon: https://kenisu-of-dragons.deviantart.com/
Check out the original story here: https://www.fimfiction.net/story/88575/the-numbers-dont-lie
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