row 1, Riddle 1
Park Row - Just North East of the Courthouse is Catwoman's House. Scan her apartment.
row 1, riddle 2
Park Row - There is an ally west of the words "Park Row" on the map. This is also the same ally you followed the bleach trail to for Identity Theft. In this area is a bar named "The Stacked Deck" and opposite that is the Mad Hatter's house. Go inside his house and on the right corner of the table is a copy of Alice in Wonderland. Scan that.
row 2, riddle 1
Park Row - Standing on top of the Courthouse flag pole, activate detective mode and look south to see a question mark. Align the two parts and scan them.
row 2, riddle 2
Park Row - East of the courthouse is a broken bridge section. Under that, you can see where the bridge would have continued but had fallen. On one side of the gate you can see signs that mention sibsidence. Scan these.
row 2, riddle 3
Park Row - From the Courthouse, head south, down the street and over the gate. Just after you pass the gate, turn right and you should see a building that has a sign that reads "Strange Minds." Scan that sign.
row 3, riddle 3
Park Row - South of the courthouse, at the next intersection, you should see the theater if you turn East. If you turn left, on the wall beside the theater is a poster that says "The Terror" and you should scan this.
row 4, riddle 1
Courthouse - Go in through the back door and into the court room. Immediately to your left is a boxed in desk with a gavel and two handguns. Scan the handguns.
row 4, riddle 3
Park Row - There is an alley just east of the words "Ace Chemical Building" on the map. Go into that alley and you are looking for a street sign on a lamp post that says "Crime Alley" on it. Scan that.
row 5, riddle 1
Courthouse - Go down stairs into the holding area. In one of the two cells is Calendar Man. Scan him.
row 5, riddle 3
Park Row - At the very top of the Ace Chemical Building is a giant sign. Scan the Sign.