The most complete work on inspections is Software Inspection, by Tom Gilb and Dorothy Graham (Addison-Wesley, 1993, ISBN 978-0201631814). It's a great cure for insomnia. Or consider Peer Reviews in Software, by Karl E. Wiegers (Addison-Wesley, 2001, ISBN 978-0201734850). Written in an engaging style, rather like the Microsoft Press books, it's an accessible introduction to all forms of inspections, covering more than the traditional Fagan versions. One of my favorite books about inspections is a free one available from SmartBear Software called Best Kept Secrets of Peer Code Review (www.smartbearsoftware.com).