Brood of the Witch-Queen by Sax Rohmer

Robert Cairn looked out across the quadrangle. The moon had just arisen, and it softened the beauty of the old college buildings, mellowed the harshness of time, casting shadow pools beneath the cloisteresque arches to the west and setting out the ivy in stronger relief upon the ancient walls. The barred shadow on the lichened stones beyond the elm was cast by the hidden gate; and straight ahead, where, between a quaint chimney-stack and a bartizan, a triangular patch of blue showed like spangled velvet, lay the Thames. It was from there the cooling breeze came.

But Cairn’s gaze was set upon a window almost directly ahead, and west below the chimneys. Within the room to which it belonged a lambent light played.