Leonora, the daughter of Viscount Talwin, decided to never marry after a few misadventures and the destruction of her illusions about her father, among others, during her come-out year when she was 18. Now, 5 years later, she has returned to London for the Season in order to help a poor cousin, Annabelle Greyling, find a husband. Both of the women become involved with the Marquess of Severne. The Marquess is an unusual character - he is a divorced man, someone spurned by most of society, although Leonora actually admires him for this, feeling that he, unlike most men of the ton, is not a hypocrite who is willing to live in a miserable marriage or marriage of convenience alone.
The plot and characters are well developed, and there is a good, if superficial, historical feel to the story, but the writing style is difficult and ponderous - I actually had to force myself to continue with the story in a few places. The love story is believable, but it takes second place to some rather unpleasant plot machinations. I would have preferred more emphasis on developing the main relationship rather than the other, less enjoyable aspects of the plot.
Edith Layton has a rather unlikeable habit of coyly inferring that a couple are kissing or embracing without actually stating it. She does this in several places in the later part of the book, when the romance has been resolved - I think she got this style from Georgette Heyer, who does it in a couple of books, but it somehow works a lot better in Georgette Heyer's books than in this book, maybe because Georgette Heyer's books are a lot more humorous than Edith Layton's.
Finally, the back cover blurb about the story on the original Signet Regency edition is ridiculous (just ignore it if you see it), but the cover is great - a painting by the wonderful Allen Kass.