"Root of All Evil" is the third episode of Season Two of Fox's Sleepy Hollow. It was written by Melissa Blake & Donald Todd and directed by Jeffrey Hunt. It is the sixteenth episode of the series overall, and debuted on October 6, 2014.
After a bank robbery turns violent, Abbie and Ichabod embark on a hunt for a mysterious silver coin that has more power than meets the eye. Meanwhile, Captain Frank Irving is put in a position where he must choose between his family and the greater good and the Mills' sisterly bond is put to the utmost test.
Ichabod and Abbie go to the asylum where Irving is being held, only to find out that his lawyer Henry Parish has barred them from seeing him. Meanwhile, Jenny has gotten out of prison thanks to Abbie, who bargained with the new sheriff so Jenny could spend the rest of her sentence doing community service. Much to Abbie's surprise, Jenny is not happy to see Abbie, in fact, she is rageful that Abbie did not tell her about her mother being killed in the asylum. After an argument between the sisters, Ichabod and Abbie learn that Henry has brought a cursed coin, one of the thirty pieces of silver given to Judas for betraying Jesus, that makes the dark side of people be revealed (which is what caused Benedict Arnold to turn against the colonists) back to the present day. After the man who has the coin is imprisoned for killing his father, the coin is taken into police custody, where Henry switches the coin with a quarter. Henry gives the coin to an unsuspecting Jenny, who now wants to kill the new sheriff because Jenny believes that she is the reason for her mother's death. Abbie and Ichabod, with the help of new ally Nick Hawley, are able to talk Jenny down, and imprison the coin in sanctified glass (where it can't affect anyone). At the end of the episode, Henry burns the bed where Katrina gave birth to him in rage.
The title references the old saying "Money is the root of all evil", which means that people will do horrible and unethical things in pursuit of wealth. In this case, however, it means that the silver coins are literally the root of the evil that Abbie and Ichabod face.
The episode refers to Judas, who was one of the 12 disciples of Jesus Christ before he betrayed Jesus to Pontius Pilate and the Pharisees to be executed as per payment of thirty silver coins.
The episode also refers to Benedict Arnold who was an American General during the Revolutionary War who eventually and notoriously, betrayed the Americans and became a British general and is now known as one of the most notorious traitors in American history.