When Aubrey Plaza can't wield her preternaturally chilly detachment in a way that makes her undead character believable, we may, at long last, be done with zombies. When John C. Reilly and Molly Shannon play Plaza's parents as unfunny hysterics, surely that's it, right? If only writer-director Jeff Baena had known before making Life After Beth, his first feature. His tale of Plaza coming back to life, decomposing grotesquely as her loved ones refuse to tell her that she died, is all trope and no Troma. A couple of chuckles around the edges fall into a deep, dry pit where the grave, gory laughs should be.