"Offers a distillation of police life and lore, drawing on the experiences of Chicago cops to present the often surprising knowledge they acquire and the methods they employ in their line of work."@en . . "What cops know : cops talk about what they do, how they do it, and what it does to them"@en . "What cops know : cops talk about what they do, how they do it, and what it does to them" . . . . . . . "What cops know"@en . . . . . . .