Nicholas Hoult gives a charming, career-making performance as a zombie dude who falls for a human woman. The post-apocalyptic world is populated by the undead. The humans hide behind a big wall, except for one blonde who gets trapped on the wrong side. Houllt’s blank comic manner and sweet charisma combine with his cuteness to create a lovable character. The script has plenty of humor and only drags for a few moments. Jonathan Levine, who succeeded in combining cancer with comedy in “50/50,” shows a knack for staging offbeat jokes. This is a romantic comedy, not a horror film, but its charms make it a DEADpan delight.