A spy-catcher offers lessons

The attempt to find the source of a 75-cent accounting discrepancy in the astronomy lab's computer at the University of California landed Cliff Stoll at the headquarters of Central Intelligence Agency in Langley, Va. Stall's account of his investigations can help journalists learn about the craft of investigative journalism. Stall's book which deals with an attempt to find an accounting error is a primer on the Internet. The book is informative for student journalists.