Jessica Day is a flame bringer. This is a talent that allows her to create fire and use electrical devices such as flashlights during the secret hour (or other blue times). She is powerful in this way since she can use this ability against the darklings and slithers that fear light because they are creatures of darkness. Jessica's power is useless in regular-time.
Jessica is in a romantic relationship with Jonathan. Her parents are discussed as well. Her sister is Beth Day.