Earlier this year, Adam Wingard emerged from the Godzilla brand-building exercise known as the MonsterVerse to deliver a raw and raucous blood-soaked slasher. Onslaught wasn't a critical or commercial hit, but it arrived like a heat-seeking missile locked onto a certain type of movie fan who revisits Terminator 2: Judgment Day on a regular basis and watches terrible Halloween sequels for fun. (In other words, it rules.) Wingard's latest also came with an intriguing caveat that may have been a turnoff for casual theatergoers: Onslaught exists in a shared universe with his previous indie horror flick, The Guest. Familiarity with...