'Glass Onion: A Knives Out Mystery' spoiler-free review: Rian Johnson delivers a superb whodunnit

Rian Johnson is single-handedly reviving the whodunnit genre. Sure, Kenneth Branagh's been churning out Hercule Poirot adaptations busting at the seams with big names. But where Branagh's detective movies are fondly looking back at the past through a tediously romantic (and self-indulgent) lens, Johnson's original stories use...