How long should I hold focus on a character who will turn out not to be the main Antagonist? I am thinking about using a character as a decoy. Someone to point the finger at but then revel that they are not the problem and is not the person of interest. I do not know how long I should hold focus on this character before the MC realizes that he is a decoy. I am thinking abut midway through the book but I also want to give the real antagonist time to develop at a interesting character.