Before you start the fifth chapter of the inFamous Paper Trail, make sure that you have performed all the activities in the fourth chapter. What is meant here is completing the twelfth optional mission and examining the evidence connected with it, on http://infamouspapertrail.com/. Find the new yellow marker on the map and head towards it.
The starting point of the fifth chapter connected with the inFamous Paper Trail is in the alley, in the central part of Downtown. Approach the yellow marker and, after you have connected with the inFamous Paper Trail Project page, confirm that you want to continue.
You now need to chase after Celia, i.e. "the paper bunny" again. There is nothing exceptional about this chase. It is actually the same as the ones in the previous chapters of the inFamous Paper Trail.
It is impossible to lose the chase, because Celia will be stopping, on a regular basis, in wait for you to catch up. During the chase, use the Neon, or the Video powers, thanks to which you will not have any problems reaching the rooftops. The chase lasts several tens of seconds and it ends where it started. Collect the Origami Dove that Celia leaves behind and reach the spot, from which you send this evidence, which is in the Denny Park.