Denis Villeneuve’s Blade Runner 2049 (B-) continues the slow-burn neo-noir dystopian atmosphere of Ridley Scott’s 1982 predecessor and flips the script on some of the motifs about androids (“replicants”) being able to approximate human emotions. Handsomely produced with mesmerizing imagery and endowed with a good-looking cast of characters sorting out future L.A. life a few decades after the events of the original, the film succeeds in moments of discovery and drags when presenting indulgent sequences of exposition. This time Ryan Gosling is the “blade runner” (rogue robot hunter), and the way his character is written doesn’t do him many favors. Harrison Ford is back in what amounts to a brief cameo and doesn’t bring much either. There’s a subplot about family secrets, a nice bit about how embedded memories are made and some twisty surprises that up the ante, but the film definitely short circuits in the final act. The first film was an efficient mystery and action thriller. It was ponderous too but delivered the goods on action, which this installment does all too infrequently during its near three-hour running time. This sequel looks spectacular on the big screen. I just wished it dreamed with a little more electricity.