
Book 2 of 3 in Sins of the Cities
An Unnatural Vice
by KJ Charles
In the sordid streets of Victorian London, unwanted desire flares between two bitter enemies brought together by a deadly secret.
Crusading journalist Nathaniel Roy is determined to expose spiritualists who exploit the grief of bereaved and vulnerable people. First on his list is the so-called Seer of London, Justin Lazarus. Nathaniel expects him to be a cheap, heartless fraud. He doesn’t expect to meet a man with a sinful smile and the eyes of a fallen angel—or that a shameless swindler will spark his desires for the first time in years.
Justin feels no remorse for the lies he spins during his séances. His gullible clients simply bore him. Hostile, disbelieving, utterly irresistible Nathaniel is a fascinating challenge. And as their battle of wills and wits heats up, Justin finds he can’t stop thinking about the man who’s determined to ruin him.
But Justin and Nathaniel are linked by more than their fast-growing obsession with one another. They are both caught up in an aristocratic family’s secrets, and Justin holds information that could be lethal. As killers, fanatics, and fog close in, Nathaniel is the only man Justin can trust—and, perhaps, the only man he could love.
- Spice
- 4/5
- Burn
- Medium
- Pages
- ~238
- Ending
- HEA
HEA means happily ever after: they end up together, for good.
How spicy is An Unnatural Vice?
An Unnatural Vice is a 4 out of 5 on our spice scale: spicy (explicit). Explicit, detailed scenes and several of them. The famous "perfect 4": real plot, real smut. Spice starts around the middle.
- Steam: Explicit open door
- Burn: Medium burn
- When: Spice starts around the middle
- Pairing: Two men
- POV: Dual POV (both leads)
- Ending: Happily ever after
Content warnings
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Show 3 content warnings
- Kidnapping
- Murder
- Homophobia
Our editorial notes, which may be incomplete. If something is a hard limit for you, check the author's own content notes too.
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An Unnatural Vice: quick answers
How spicy is An Unnatural Vice?
An Unnatural Vice is a 4 out of 5 on our spice scale: spicy (explicit). Explicit, detailed scenes and several of them. The famous "perfect 4": real plot, real smut. Spice starts around the middle.
Is An Unnatural Vice a standalone?
No. An Unnatural Vice is book 2 of 3 in Sins of the Cities. Start with An Unnatural Vice. The series is complete.
What tropes are in An Unnatural Vice?
An Unnatural Vice features enemies to lovers, victorian. It is a medium burn M/M romance that ends with a happily ever after.
Does An Unnatural Vice have content warnings?
Our notes for An Unnatural Vice include: kidnapping, murder, homophobia. This list may not be complete; check the author's own content notes if anything is a hard limit for you.
What should I read after An Unnatural Vice?
If you loved An Unnatural Vice, try The Magpie Lord by KJ Charles, The Rogue Not Taken by Sarah MacLean, A Fashionable Indulgence by KJ Charles. They share its enemies to lovers and victorian energy at a similar spice level.












