Crime Library contained an extensive collection of crime related articles, which were separated into categories: Serial Killers, Notorious Murders, Criminal Mind, Terrorists & Spies and Gangsters & Outlaws. Each category was then broken down into further subcategories.
The Crime Library organized its articles about crime into distinct categories: serial killers, notorious murders, criminal psychology, terrorists and spies, and gangsters and outlaws.  Each category was then broken down into additional subcategories for greater detail.