Based on the novel by Kazuo Ishiguro, Let Me Go is a strange, slightly unreal story set in a dystopian Britian. However, seeing as it stars Keira Knightley and Carey Mulligan, it is also a sure-fire box office smash. The team released their first trailer today, giving us a peek into the dark, unbalanced and slightly unnerving world of Ishiguro and director Mark Nomanek (of One Hour Photo).