Special Agent Steven Thatcher and his family are still recovering from his son's abduction six months ago during one of his cases when he lands another case involving a missing teenager. He soon realizes he's dealing with a serial killer when a second teenage girl goes missing. Meanwhile, he's trying to deal with his problems at home as his oldest son has had a personality change and is failing chemistry. When Steven meets with his teacher, Jenna Marshall, there is plenty chemistry to go around.