And why was Lethington thus ‘extremely opposed’? First, Mary, if free, would join Bothwell, his deadly foe. Secondly, he knew from her own lips that Mary knew his share in Darnley’s murder, and had proof. While she lived, the sword hung over Lethington. He, therefore, insisted on her imprisonment in a place whence escape should have been impossible. He is even said to have advised that she should be secretly strangled. Years later, when time had brought in his revenges, and Lethington and Kirkcaldy were holding the Castle for Mary, her last hope, Lethington explained his change of sides in a letter to his opponent, Morton. Does Morton hate him because he has returned to the party of the Queen? He had advised Morton to take the same course, ‘being assured that, with time, she would recover her liberty (as yet I have no doubt but she will). I deemed it neither wisdom for him nor me to deserve particular ill will at her hands.’ This was a frank enough explanation of his own change of factions. If ever Mary came to her own, Lethington dreaded her feud. We shall see that as soon as she was imprisoned, Lethington affected to be her secret ally. Morton replied that ‘it was vain in Lethington to think that he could deserve more particular evil will at Mary’s hands than he had deserved already.’[210] Lethington could not be deeper in guilt towards Mary than he was, despite his appearance of friendship. The ‘evil will’ which he had incurred was ‘particular,’ and could not be made worse. In the same revolution of factions (1570-73) Randolph also wrote to Lethington and Kirkcaldy asking them why they had deserted their old allies, Morton and the rest, for the Queen’s party. ‘You yourselves wrote against her, and were the chiefest causes of her apprehension, and imprisonment’ (at Loch Leven), ‘and dimission of her crown.... So that you two were her chiefest occasion of all the calamities, _as she hath said_, that she is fallen into. You, Lord of Lethington, _by your persuasion and counsel to apprehend her, to imprison her, yea, to have taken presently the life from her_.’[211] To this we shall return. When we add to this testimony Mary’s hatred of Lethington, revealed in Nau’s MS., a hatred which his death could not abate, though he died in her service, we begin to understand. Sir James Melville and Throckmorton were (as we shall see) deluded by the ‘dulce manner’ of Lethington. But, in truth, he was Mary’s worst enemy, till his bolt was shot, while hers remained in her hands. Then Lethington, in 1569, went over to her party, as a charge of Darnley’s murder, urged by his old partisans, was hanging over his head. Meanwhile, after Mary’s surrender at Carberry, the counsel of Lethington prevailed. She was hurried to Loch Leven, after two dreadful days of tears and frenzied threats and entreaties, and was locked up in the Castle on the little isle, the Castle of her ancestral enemies, the Douglases. There she awaited her doom, ‘the fiery death.’ IX