Batman: Detective Comics Vol. 4: Riddle Me This (Hardcover) (comics)

Riddle me this...when is a criminal not a criminal? The answer awaits you in Batman: Detective Comics Vol. 4! The Riddler is back in Gotham City in a big way, becoming a media personality and using his newfound influence to wreak havoc on the Dark Knight. As Batman chases down clues to put an end to Riddler's machinations, the clock ticks away for the citizens of Gotham whom Edward Nygma has placed in the line of fire...

Collects Detective Comics #1059-1061!