Robert Selby seeks out Alistair, the Marquess of Pembroke, to help him introduce his sister into society. He's certain that she can make a great match if she just gets the right introductions, and Alistair, whose late (and by Alistair, unlamented) father was a friend of the Selby family, is the only thing resembling the right connection that they have. Alistair has, with much effort, managed to restore the finances and the reputation of his family after his father left both in disrepair. This has left him with a giant stick up his arse. He first thinks that doing a favor for the Selbys might encourage some other people to stop bothering him for favors, but he's more interested in Robert than he ought to admit if he wants to keep the family reputation intact. What he doesn't know at that point is that "Robert Selby" is actually Charity Church, formerly the Selby's maid. She's been living as Robert for the past six years but the charade will end as soon as she sees Louisa Selby settled.
The conflicts in this book do not come from where you expect them to. Alistair finds out who Robin actually is fairly early in the book and does not much care about what the contents of her pants are. (Robin is, per the author's note, nonbinary but unlikely to use anything but "she" pronouns simply because they wouldn't bother her, so I'll stick with "she" and "Robin," the name she thinks of herself by at the end of the story, for any part of this review where the "Robert" disguise isn't front and center.) The issues arise partly from the fraud upon which Robin's life as Robert is built, which make it impossible to remain "Robert Selby" any longer than absolutely necessary, and partly from Alistair's reluctance to have a long-term partner who is anything but his wife, after having suffered in the reflected scandal of his father and his mistresses. And there are certain expectations for the wife of a Marquess that don't involve dressing and conducting herself like a man. Many of these issues are wrapped up rather quickly but in my estimation it was clear enough that it wasn't entirely without repercussions- just that they'd decided what social repercussions a Marquess could bluster his way through and what they were all willing to live with. It did have the effect of making a story with so many complications actually seem fairly low conflict, but the characters are delightful, the plot is different, and the book is all around thoroughly charming.
Overall: B