“Pizzagate” was a 2016 conspiracy theory centering on a D.C. pizza place that gained brief, media-fueled attention before being widely debunked. Through a frenetic mash of footage spurred by this bizarre turn of events, filmmaker Charlie Lyne wrestles with the idea that conspiracy theories are more believable than we’d like to admit and grapples personally with his uneasy, lingering identification with Pizzagate believers. Rife with flourishes from late-night private-investigator programs, Personal Truth is a stylish and eerily thrilling video diary of one filmmaker’s closer look at his own truth-making mechanisms. At its end we’re left to wonder, as our information’s integrity comes increasingly under fire, how we separate beliefs from the perils of “fake news,” healthy skepticism from the throes of conspiracy thinking.  SD