(WTTW News)

Criminal history in Cook County is long and sordid — from Al Capone to Leopold and Loeb to John Wayne Gacy. The historical figures may be long gone, but the physical documents and evidence pertaining to their cases are still around.

Left: Nathan Leopold, soon after his arrest. (Chicago Daily News photo courtesy of the Chicago History Museum)

In all the attempts to dissect the Leopold and Loeb story, one mystery remains unsolved: What happened to the vast bird collection that Nathan Leopold had in his Chicago home when he went to prison?

Nathan Leopold and Richard Loeb with Judge John Caverly. (Courtesy of Chicago History Museum)

Some have called the Leopold and Loeb case “the murder that wouldn’t die.” A new book fans the flames of our obsession with this baffling and sensational crime. A conversation with author Nina Barrett.

Imagine learning your father was prison pals with notorious murderer Nathan Leopold. That’s the true story told in a new graphic novel.