This book, the fourth in the series, centers around Lord Vaughn and Mary Alsworthy, the older sister of Letty, the heroine of the last novel. When this book opens, the vain and self-centered Mary is still reeling from being jilted by Geoffrey, a former suitor who ended up marrying Letty. Although not brokenhearted (Mary's interest in Geoffrey was purely financial), Mary is still bitter over the fact that after several seasons, she is remains unmarried. Afraid she is about to end up a spinster, she agrees to help Lord Vaughn, an elusive, sardonic rake who is constantly quoting (and misquoting) Shakespeare, attempt to capture the French spy who calls him/herself The Black Tulip.
As the action unfolds-- and there is a lot of suspense in this installment-- Mary and Vaughn are drawn to each other, although they fight against their growing attraction. Many of their exchanges are reminiscent of Rhett/Scarlett or Benedick and Beatrice in that they spar and flirt, while still guarding their feelings. Eventually they fall in love, but their romance is not conventional-- in fact, there isn't even a real love scene between them (my only real disappointment with this book. It was a glaring absence).
While I was reading "The Seduction of the Crimson Rose," I thought that it would likely generate a lot of mixed reviews, largely because Mary and Vaughn are not conventional protagonists. Also, although there are romantic scenes, both characters are so pragmatic that they don't get swept away in the manner of the pairings in the other three "Pink Carnation" books. This is not to say, however, that there aren't romantic scenes. They are, and they are sweet, although still in keeping with the characters' more emotionally reticient natures.
For me, this installment was the most interesting and satisfying, not only because the writing is the strongest, but because Mary and Vaughn, despite their unconventionality, had what felt like the most real romance.
Are Vaughn and Mary likeable? Not as immediately endearing as Henrietta, Amy or Letty or, for that matter Richard, Miles, or Geoffrey, but they are very well drawn, distinctive characters. In the previous books, Vaughn came across as lecherous and a little creepy. It is to Willig's credit that in this one we get a deeper impression of the man as highly flawed, but still sympathetic-- complex, but surprisingly tender. And when Mary falls in love with Vaughn and performs her first unselfish acts, it's hard not to like her.
There are many reveals in this novel, and the writing is very crisp. Also, Eloise finally makes progress with Colin.
To my mind, the Pink Carnation books are unlike anything else on the market-- a very readable hybrid of historical fiction, romance and suspense. And this installment was, for me, the most compelling of them all so far.