The Riddle Solved

Report back to Nightwing in the East End police station in Gotham

Objectives
"Now that we know that the Joker is working with T.O. Morrow, we can start making plans to take them both down. The new Joker toxin is far too dangerous to leave in their hands. Not to mention Morrow's Jokerized robots. Thank you for your help today. Speak to Nightwing in the safehouse. Batman out."

- Batman

$18, Helmet of the Agile Mind
 * Talked to Nightwing