 A caped and hooded creature made of straw (Scarecrow), is set loose on the city of Chicago after being dug up in the sewers by curious city workers. He walks around the city trying to cause enough fear in people that they are literally "scared" to death by their greatest fear. As Nicholas and Kate review the archives to research a previous Scarecrow case, they determine that his next objective would be to find a way to scare a massive amount of people at one time. Meanwhile, Nicholas has been mandated to attend anger management classes. Also, Danny panics when his ex-wife starts to harass him.