Literary Larceny and WorldCat to the rescue
Initially the post looks like a standard book review of Allison Hoover Bartlett's book, The Man Who Loved Books Too Much. You can read more and get an excerpt on the story from the NPR story "Literary Larceny"--which we liked so much we stole the title for our post, too.
But once you read the comments, the WorldCat-interesting-ness starts to unfold. Apparently the FBI used WorldCat in order to help catch literary thieves--and OCLC (the library cooperative who helps maintain WorldCat) created a video in 1990 to tell the tale. The video (VHS) is called "The Omaha Project: A Rare Book Adventure" and is available in more than 546 libraries around the world. The summary is as follows:
Four OCLC staff members and 40 volunteers use [WorldCat,] the OCLC database [,] to help the FBI inventory more than 20,000 stolen rare books and manuscripts allegedly stolen by Stephen C. Blumberg and help locate their possible owners.
How cool is that! WorldCat even helps track down criminals. Who knew?