Hey guys and gals! Here is my 100% Achievement Guide for Infliction!
Once you get the keycard inside the police station, you go back to the area you started (IMPORTANT!! - Do NOT go through the door right next to the vending machine, if you do it progresses the story (Although there is chapter select available once you finish the game).
Once you are back at the area you started, go to the door which says "Line Up", use the key card, enter, and take a photo of the seemingly empty criminal line up thing behind the glass.
Achievement unlocks and is also part of your 4 supernatural investigator photos
Hope This Helps!