I also consider this book better than the first 2 in the "series" (a term I use loosely, because Book 2 seemed strangely out of place).
I really liked the heroine Jane. She was incredibly brave and self-sufficient, didn't care about how she looked to men, wasn't simpering like every other female. The fact the Case falls for her shows he has good taste! Despite this, he still seems a bit cardboard-y to me as a character, i.e., a quintessential aristo. Though he DID have years of experience in the grueling, brutal Peninsular Wars, unlike his younger brother who joined up at the last minute and was feted along with the rest of the British officers after Waterloo.
"La Roca"--Gideon Piers--provides the suspense throughout, and he has connections to both Case and Jane, Jane through his sister. (The two women were both teachers at the same school somewhere.)
Other authors might have left the plot there, but Thornton adds a surprising twist with the sudden appearance of an abusive husband, James Campbell. When Jane runs into him in London, I could feel her terror--like Julia Roberts in "Sleeping with the Enemy": Running away to start a new life but always afraid that the monster will find her someday. Campbell doesn't hesitate to punch Jane in the stomach (where it won't show, of course) in the middle of a London street. The fact that another bully witnesses him beating her and cheers for the abusive husband is sickeningly real.
I can imagine that Thornton's feels special compassion for abused women because she was a priest later in life; I can only imagine that she was called on more than once to counsel abused women.
I think Thornton's books are so popular precisely because they are not just "fluff"; they describe the darker side of life as well. Mentioning domestic violence and an early women's rights organization lends realism, and tells readers that the road to where we are today didn't happen overnight--it has been a centuries-long, painful struggle.
Young women need to know this and pay tribute to the generations of women before who had to fight for the right to vote, own their own property, even open a banking account. We're still fighting gender discrimination and abuse. Girls today probably can't imagine men having the right to commit a wife or mother or sister to an insane asylum against her will, or the right to take a woman's children away from her for having an affair. Or blocking access to birth control. These still happen today! Even though Roe v. Wade has been a law for decades, the rabidly conservative are still trying to rob women of the right to determine what happens to their own bodies. Men still hunt down ex-girlfriends and wives who dared to break free, still kidnap children to punish and terrorize the women. Scares the bej__us out of me just thinking about it.
Thornton mentions that divorce was rare at the time in England because it was so expensive--20,000 pounds sterling! Unbelievable. It infuriates me when I hear men joking about marriage being a ball and chain for THEM. If anyone is chained, it's the wives in most cases. Divorce was so expensive so that it would be impossible for wives to escape. It is still beyond the reach of wives who have no money of their own! Women really were chattel then, and still are today--especially in many poor nations.
So where does it all end? Sadly, it doesn't. There will always be bullies, men who want to control women by whatever means necessary, as long as there are abusive parents to model abusive behavior to their children. A very sobering thought.