City of Ghosts: Matthew Heineman provides an extremely raw experience in his documentary about men and women facing the forces of absolute evil using the only weapon they can: information. Their stories, and much of the footage, are not for the faint of heart. That said, while the sense of urgency and danger is always present, the energy of the film drops (and the pace starts to drag a bit) as Raqqa is, in a way, left behind. That may be a somewhat minor quibble, considering how important and powerful the film is. The film, shot by Heineman, isn’t worried about aesthetics, as the images have a serviceable quality but also great intimacy to them.