As an epidemiologist researching AIDS, Elizabeth Pisani has been involved with international efforts to halt the disease for fourteen years. With swashbuckling wit, fierce honesty, and more than a little political incorrectness, she dishes on herself and her colleagues as they try to prod reluctant governments to fund HIV prevention for the people who need it most: drug injectors, gay men, sex workers, and johns. With verve and clarity, Pisani shows the general reader how her profession really works; how easy it is to draw wrong conclusions from "objective" data; and, shockingly, how much money is spent so very badly.