Scarlett Johansson certainly seems perfect, but even she needs a little movie magic to reach superhuman status. In Lucy, that’s what happens, but it’s not as cool and glam as it sounds. A gang uses her character, the titular Lucy, as a drug mule, and when the potent substance they placed within her begins to leak, she finds she’s able to use much more than the 10 percent normal people use of the brain. The science-fiction action film, directed by Luc Besson, is not for the faint of heart, but so far, it’s getting (mostly) positive critical reviews.