What is the answer to the riddle "your a dummy if u dont try to buy one" in the game arkam city and where can I find the answer

To solve the Riddle "You're a dummy if you don't try and buy one" is scan sign above "Magic and Props" in Scarface's puppet shop in Bowery.
Updated on Monday, February 06 2012 at 07:04PM EST
Collections: bowerydummypropriddlemagic