The Leftoversopens with as many questions as any mystery box show, but the ending succeeds in a way that most others don't. HBO's series ran from 2014 to 2017, kicking off with an Earth-shattering incident: two percent of the population vanishing into thin air. Naturally, this shakes the very foundation of humanity, from those who lose loved ones to those who watch it happen. It's little surprise that the world is thrown into chaos on the heels of this event, and the fallout is evident everywhere, from Mapleton, New York to Miracle, Texas.