He would gratify his fiendish malignity by perpetrating signal mischief on his benefactor, and perhaps bringing some old pestilence or other forgotten and long-buried evil on society; or, possibly, teaching the modern world some decayed and dusty kind of crime, which the antique Romans knew,--and then would hasten back to the catacomb, which, after so long haunting it, has grown his most congenial home.
Miriam herself, with her chosen friends, the sculptor and the gentle Hilda, often laughed at the monstrous fictions that had gone abroad in reference to her adventure.

Her two confidants (for such they were, on all ordinary subjects) had not failed to ask an explanation of the mystery, since undeniably a mystery there was, and one sufficiently perplexing in itself, without any help from the imaginative faculty.
And, sometimes responding to their inquiries with a melancholy sort of playfulness, Miriam let her fancy run off into wilder fables than any which German ingenuity or Italian superstition had contrived.
For example, with a strange air of seriousness over all her face, only belied by a laughing gleam in her dark eyes, she would aver that the spectre (who had been an artist in his mortal lifetime) had promised to teach her a long-lost, but invaluable secret of old Roman fresco painting.

The knowledge of this process would place Miriam at the head of modern art; the sole condition being agreed upon, that she should return with him into his sightless gloom, after enriching a certain extent of stuccoed wall with the most brilliant and lovely designs.

And what true votary of art would not purchase unrivalled excellence, even at so vast a sacrifice! Or, if her friends still solicited a soberer account, Miriam replied, that, meeting the old infidel in one of the dismal passages of the catacomb, she had entered into controversy with him, hoping to achieve the glory and satisfaction of converting him to the Christian faith.

For the sake of so excellent a result; she had even staked her own salvation against his, binding herself to accompany him back into his penal gloom, if, within a twelvemonth's space, she should not have convinced him of the errors through which he had so long groped and stumbled.