The newest high-octane addition to the thrilling Cell 7 seriesMartha and Isaac have escaped, but are now on the run - the government has branded them rebels and a danger to the public.Despite the rewards being offered for turning them in, Martha and her friends are safe in The Rises, the area of the city full of the poor and the powerless.But then the Prime Minister orders a wall to be built.Is it to keep those inside safe - or is it to imprison them?Martha needs to act, and to act fast, in a tale of breathtaking treachery that reaches right to the heart of those in charge...