Kicked out of his parental home by his scheming young stepmother, a young country boy, Arthur Mervyn arrives in Philadelphia. Here he finds the city in the throes of a deadly yellow-fever epidemic. However, he finds a small job as a clerk and is determined to make his way in the world. He soon discovers that his employer is a con man and a murderer. One night, Arthur helps him dispose of a body in the river. While they're struggling with the corpse, the employer is swept away by the current. ...