Arethusa by F. Marion Crawford

Zeno left his house noiselessly half an hour later, after changing his clothes. He was now lightly clad in dark hose and a soft deerskin doublet with tight sleeves, a close-fitting woollen skull-cap covered his head, and he had no weapon but one good knife of which the sheath was fastened to the back of his belt, as a sailor carries it when he goes aloft to work on rigging. The night was cool, and he had a wide cloak over his shoulders, ready to drop in an instant if necessary.

It was intensely dark as he came out, and after being in the light he could hardly see the white marble steps of the landing. He almost lost his balance at the last one, and when he stepped quickly towards the boat, to save himself, he could not see it at all, and was considerably relieved to find himself in the stern sheets instead of in the water.