An entertaining and...eventually...fast paced caper set in the world of governments spying on their own citizens using any cyber tool the big bad corporates will sell them. However the surfeit of One dimensional characters who accompany and harry the faintly believable heroine, plus Doctorow’s need to constantly be “educating” his audience – as evidenced in the frankly unnecessary and multiple afterwords – lets down its efforts to be anything other than a semi-enjoyable read which geeks especially will no doubt lap up.