“Where Heath Ledger’s version was scarred, shabby and countercultural, Leto’s has a smooth, blingy gangsta swagger; a modern take on the way the original comic-book creation riffed on ’30s mobsters. But it’s not his swish, purring style and elegant, slo-mo cackle that really hooks you, it’s something we’ve never seen before: the Joker in love. Here’s a fascinatingly jagged new angle (cinematically at least). It’s unsettling and compelling — almost enough to make you wish it were more than a subplot.”