Domnei by James Branch Cabell

Then at three o'clock, as Perion supposed, someone tapped upon the door. Perion went out into the corridor, which was now unlighted, so that he had to hold to the cloak of Ayrart de Montors as the young prelate guided Perion through the complexities of unfamiliar halls and stairways into an inhospitable night. There were ready two horses, and presently the men were mounted and away.

Once only Perion shifted in the saddle to glance back at Bellegarde, black and formless against an empty sky; and he dared not look again, for the thought of her that lay awake in the Marshal's Tower, so near at hand as yet, was like a dagger. With set teeth he followed in the wake of his taciturn companion. The bishop never spoke save to growl out some direction.