The "crook quotes" were the phrases found under each crook's name in the Dossiers. The quotes were a type of cryptic clue. You substitute city puzzle answers for words in the clue and follow the resulting directions found in the clue. Chuck L. "Evil" Lee Bad test includes insane, deep laugh GRE LOW CACKLE = ROCKWELL CAGE (mixed up GRE holds LOW and CACKLE anagrammed)