John Dillinger. Al Capone. The KKK. The Unabomber. John Gotti. Bonnie and Clyde.
The FBI has investigated them all… and many more spies, terrorists, and criminals besides. Listed below, grouped according to our top investigative priorities and related categories, are many of our famous and most significant cases over the past century.
The monographs and write-ups below have been made available for your use. You may download them for any non-commercial use without obtaining permission from the FBI. If you don’t see a case listed here, try our search engine or history story index.