In the last third of Mary Shelley's Frankenstein, Victor and the monster end up alone and miserable.
In fact, in this novel written by Mary Shelley in which Victor creates a monster in a ambitious and dark experiment, the real monster appears to be Victor itself, since he is the one who shows characteristics of being a monster. Victor creates the monster to be like himself. Victor does not plan to create the monster like himself, however, in the end Victor's creation becomes very much akin to Victor.