DigiBiscuit
An alternate timeline of the story "Strange Case of Dr. Jekyll and Mr. Hyde", focusing on the question of Utterson, "Did Hyde really die?", and the idea of Jekyll and Hyde being a different being in the same body.
To simply put it up, Jekyll allows Hyde to take full control of the body (as shown canonically), but afterwards, he doesn't commit suicide, but instead runs away.
But what would happen if he appeared again? Surely no one would remember him, but a certain Utterson and Poole would, so if they did meet, Hyde would probably have to go through a series of "fitting into society", but without the help of Jekyll, who, even as a reflection link, despises the idea of being a part of it.
Will Edward be able to fully reform as a decent Englishman?
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The story starts a year after the two men's disappearance.
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NOTE: as the story goes on, violence AND explicity (not to mention oral vulgarity) shall ensue, as to probably make the alternate timeline in the rating of K. However, since all these things will carry in as "slight", I shall make the rating R-14 or 16, depending on its intensity.