One of the odd things that I picked up was while re-watching Ep 6 was that Haffner was the first to show that he did not have a tattoo but if you notice he draws a horizontal line in front of Patrick on his shoulder to show there is no tattoo but HOW does Haffner know that the 3 dot tattoo in question is horizontal??? Also when Stiles showed his shoulder he didnt do a similar gesture which leads me to believe that there might be something more to Haffner than what meets the eye. May be RJ but not sure.