This is a very satisfying novel. First, the literary style is intriguing: long sentences with lots of commas and yet reading is smooth. Second, the subject matter is very topical; a dystopian future that begins in a localized fashion with two young lovers in an unspecified Middle Eastern location. Escalating conflict leads them to escape through doors that are portals to distant locations (London, Mykonos). Their future becomes uncertain in new lands that are overwhelmed by the arrival of increasing numbers of refugees/migrants like themselves. How do relationships survive when tested repeatedly – highly recommended.