This is a powerful book, a window on aspects of America most people would rather ignore. To their great credit, the authors--David Simon wrote Homicide, the basis for the popular television show; Edward Burns is a former Baltimore police officer, now a public school teacher--refuse to sensationalize their subject or make its people into stereotypes. For a year the two hung out in a West Baltimore neighborhood that was a center of the drug trade. At the center of the narrative is the McCullough family--DeAndre, age 15, and his drug-addicted parents, Gary and Fran. While reading The Corner, there are times when we pity them, times when they make us angry. The book's strength, though, is that we always understand them.