In the near future, energy wars are raging across the globe, blackouts are a regular occurrence, and the privileged Citizens and the desperate Outsiders of London live very separate lives. Hunter is a Citizen whose father works for the government; yet he cannot help being fascinated by the Outsiders' ingenuity and, in particular, their mastery of free running. But when he meets Uma, an Outsider, he is quickly drawn into her world and finds himself racing against time—and against the government's cruel Kossak soldiers—to protect everything the Outsiders hold dear.
Saci Lloyd has written a screen play and worked as a script editor in the film industry. She is the author of The Carbon Diaries 2015, which was named a Booklist Top Ten First Novel for Youth, a School Library Journal Top 10 Book of the Year, a Horn Book Fanfare Selection, and the grand prize winner of the Green Book Festival. In addition, Kirkus Reviews called The Carbon Diaries 2017 "captivating" in a starred review.