Its body will be separated from the period. You should see the top half of the question mark on one of the windows facing south towards Frank Boles' body. Pop down into either one to find the trophy. Batman must zoom in using his cowl's vision and scan the words "Great White Shark" on the jar to solve the riddle. After you have solved the riddle, you may use the Cryptographic Sequencer to disable the electrified floor, so that you may walk back out.
Batman must scan Black Mask 's original wooden mask, mounted on the wall in Dr. Hop up onto the vent and drop into the cage with the Riddler Trophy to snag it. Look for an openable grate while crawling through the vents. Secure Transit This tape is next to the elevator shaft that Harley escapes up and that you're forced to climb.