From Booklist:
O’Brien weaves plenty of information about the country through the story, and interspersed sections describing the experiences of some of the North Koreans they meet on their trip add depth. Mia, who was adopted from South Korea by a white American family, offers some thought-provoking insight into the experience of interracial adoption. This fast-paced and tense survivalist thriller, made all the more compelling for its fascinating setting, should find broad appeal.