Veteran filmmaker Stephen Frears's uneasy mix of socially conscious slice-of-life filmmaking and thriller clichés takes place in a London underground populated by desperate asylum seekers, undocumented immigrants and refugees. Illegal Nigerian immigrant Okwe (Chiwetel Ejiofor) is an educated man, but some dark secret keeps him up nights and has reduced him to toiling in low-level jobs like minicab driving. Okwe lives to work, as though constant business might stave off his demons. His only relaxation comes from playing chess with morgue attendant Guo Yi (Benedict Wong) and snatching the occasional nap on a rented couch. His "landlady," Senay (Audrey Tatou), is a Turk...