The Wolf-Leader by Alexandre Dumas — Read

Thibault was delighted at seeing what had happened to the young Baron, whose hand, anything but light, had so shortly before made use of his whip on Thibault's shoulders, which still smarted with the blow. The latter now ran at full speed to see how far Monsieur Raoul de Vauparfond was injured; he found a body lying insensible, stretched across the road, with the horse standing and snorting beside it.

But Thibault could hardly believe his senses on perceiving that the figure lying in the road was not the same as had, but five minutes previously, ridden past him and given him the lash with the whip. In the first place, this figure was not in the dress of a gentleman, but clothed like a peasant, and, what was more, the clothes he had on seemed to Thibault to be the same as he himself had been wearing only a moment before. His surprise increased more and more and amounted almost to stupefaction on further recognising, in the inert, unconscious figure, not only his own clothes, but his own face. His astonishment naturally led him to turn his eyes from this second Thibault to his own person, when he became aware that an equally remarkable change had come over his costume.