Elizabeth Whitley is the wife of the present Minister of the High Kirk of Edinburgh (St. ), the pulpit once occupied by John Knox. Consequently she has a unique interest in the life and accomplishments of the 16th century reformer, John Knox, who, together with Calvin, was a mainspring of the Protestant Reformation. Knox was theologian, preacher, guides of the destiny of Scotland and many a modern church. He feared neither Elizabeth of England nor Mary of Scotland nor their self-seeking, blood-thirsty . A reader will inevitably learn somewhat of the confused history of the period. He will a clear understanding of the theological problems involved in the switch from Roman Catholicism to the Calvinistic Kirk. However, he will continue to be by the , , character of ""Plain Mr. Knox"".