Offers an overview of a universe of brothels and bureaucracies, of bickering junkies and squabbling charities, of men who sell sex and men who would rather prohibit it. Illustrating science with tales from the frontlines of sex and drugs, this book explains how we could shut down HIV everywhere except sub-Saharan Africa.

It's both a brave, campaigning book that will save lives and change policy on; and a fantastic read, written with passion, wit and integrity.