The book follows several storylines--politics of that era (late 1880s), Russian spies, English intelligence agents, some other people and a "romance" between Damien and Emma.
The book is seen through from Emma Wyncliffe's eyes. She is a headstrong spinister (insert conventional headstrong spinster stereotypes here) who is coerced into a marriage with Damien Granville--a landowner in Kashmir. Why didn't I like this couple? Well, in their first meeting, Damien tells Emma that he supports physical punishment for cheating wives--and in India, it's a pretty rough punishment. In their second meeting, he slaps her. Um, that sort of action is NEVER acceptable. I don't care if he was angry; it was absolutely wrong.
It's not like Damien spouted off support of wifely abuse, but his actions somewhat supported it. (Rebecca Ryman is a pseudonym for someone who was raised in and lived in India [but isn't Indian? Her bio didn't say.]. So I wonder if her heritage or religion had anything to do with presenting Damien in this manner--and Emma, for that matter. Emma was upset, etc., but didn't condemn Damien for his treatment of her.)
Basically, the convenient marriage romance--which I normally like--didn't work for me. The espionage parts of the book (and there were plenty) sometimes confused and bored me. At the end, the storylines do come together nicely, if somewhat unbelievably and suddenly (for example, the identity of the random Armenian slave girl that all sorts of people are looking for).
So...overall, it honestly wasn't a bad read, just not engrossing and with a shoddy romance--but I would not re-read it, that's for sure!