A mediocre regency romance with spies and counterspies, this book didn't impress me much. It was a clean romance (no sex beyond a few kisses) where the heroes face lots of dangers and overcome multiple obstacles on their way to be together. Unfortunately their mutual affection hardly shows. There is no build-up of their relationship. At first, they don't know each other - and suddenly they are in love. Most of this book concentrates not on romance but on the 'spy thriller' subplot, which should've been secondary in a romance book but wasn't.
Another thing that irked me in this novel was the author's unprofessional handling of the POV. It wandered. Ms. Abrams would start a scene with the heroine's POV, then switch to her maid's POV for two sentences, then to her aunt for two paragraphs, and then back to the heroine for the rest of the scene. This was an unexpected and amateur approach in the otherwise professionally written and edited book. I can't understand why its editor allowed this clinker to stand.
On the other hand, this book is unique in the genre: it has a Jewish heroine. I read romances a lot and I've never read a regency about a Jewish woman. The female protagonist, Rachel, is a Jew from a rich family. Her uncle is a banker supporting the British military campaign in Spain. Her father and brother serve the Wellington army as spies against Napoleon. I don't know how tenuously these facts reflect the real life, but maybe. I'm willing to believe that. What I can't believe is that a British aristocrat would fall in love with a Jewish woman and marry her.
With all that critique above, it was overall not a bad book. It was engrossing and I never once wanted to DNF it. It gave me a few days of reading pleasure, even though I doubt I would want to read this author again.