I was so happy to finally read Anna and Daniel's story. It was a long damn wait. Anna has done a lot of growing up since book 2, and has resigned herself that she won't ever marry. She is working and supporting an orphanage, much to the chagrin of her brother (hero of book 1). He has resigned himself to it, and instead of forbidding it, assigns servants to watch over her. So Anna has become quite independent, although it all stems from guilt over her part in her cousin Cecily's attack a few years back.
Daniel was an interesting character to me. His family is a group of spies, including his mother and aunt. So these women are quite independent and self-sufficient. Yet, he becomes very chauvinistic when it comes to allowing Anna to do her charitable work in the orphanage, saying basically that women shouldn't be doing that sort of work, and that she should be dancing in a ballroom and looking pretty with no worries. (paraphrasing, but that's the gist of it). So I thought that was an interesting dichotomy.
Watching Daniel try to manage Anna was hilarious. He just couldn't fathom why she would want to go out and work in the orphanage rather than simply donate her money. She, in turn, insisted on maintaining her independence. He had to slowly come around, while at the same time trying to solve the mystery of who killed his father and was now threatening him. I loved watching Daniel and Anna try to deny their feelings, while at the same time acknowledging the crazy feelings swirling inside.
I did guess the whodunnit very early on, but it didn't impede my enjoyment of the journey at all. I loved reading about Daniel's spy family, and revisiting the couples from the previous 2 books.
I'm hopeful that Joanna, Daniel's widowed aunt, will get her own story next.