Having frittered away his family's fortune in Paris, the profligate Guido, driven by his ungovernable passions, is forced out of his native Genoa and harbours plans for revenge. After a mighty storm, he sees a mysterious, misshapen creature approaching from the sea, with whom he makes an infernal bargain to exchange bodies, with momentous consequences.

First published in 1831 and here presented with the supernatural stories 'The Evil Eye' and 'The Mortal Immortal', the chilling Gothic tale 'Transformation' is a paragon of the genre by the author of Frankenstein.