Mean Streets. If you happen to unintentionally dispel the illusion carried by one of the fakes at the start of the group mission (e.g. a fake hits you whilst you are pulling the thugs and you proc a slow), that buff isn't reapplied. Hence it becomes difficult to tell which is a fake. This can be overcome by marking the real one at the start, but ideally the buff which the fake has, would be periodically reapplied
