David Mitchell's 2004 novel Cloud Atlas has long been considered unfilmable, and make no mistake: It still is. The new movie by the Wachowskis and Tom Tykwer is very much an adaptation, borrowing the basic outline of Mitchell's book to create something entirely its own. The film juggles six characters with six distinct storylines, set in time periods ranging from the 1830s to a distant, post-apocalyptic future. Given the audacity of its undertaking, Cloud Atlas is remarkably cohesive. Some storylines resonate more than others, but they're all efficiently told. But for all the energy and flair this adaptation possesses, it's so focused on pulling off the logistics of adapting Mitchell's novel that there isn't room for much depth. by Alison Hallett