Before you start chapter three, of the inFamous Paper Trail, make sure that you have performed all of the activities in the second chapter. What is meant here is completing the sixth optional mission and investigating all of the clues connected with it, at http://infamouspapertrail.com/. Find the new yellow marker on the map and head towards it.
The starting point for the third chapter, connected with the inFamous Paper Trail, is on the rooftop of one of the buildings in Georgetown. Approach the yellow marker and, after you have connected to the site of the inFamous Paper Trail confirm that you want to continue.
Ahead of you, there is another chase after Celia, i.e. the "paper bunny". This part of the mission is subject to the same rules as the chases in the first and the second chapters of the inFamous Paper Trail. It is impossible lose the chase, because Celia is stopping on a regular basis, and waiting for you to come closer. During the chase, it is best to use the Neon and the Video powers, thanks to which you will not have any problems with reaching, among others, the successive rooftops. The chase last several tens of seconds and it ends near the next crime site in Georgetown.
You need to approach the crime scene and the important piece of news is that it is being guarded by the police. If you are playing as the villain (bad karma), you can kill them all. If you are playing as the hero (good karma) leave them be and walk around them, from behind. After you approach the crime scene, select the phone from the inventory. You need to take a photo of three objects - the burned car, the posters behind the car and a new origami dove. Finally, pick up the Origami Dove and the Poster.
Now, you only need to reach the place where you send the gathered evidence and it is located in the central part of the Market District.