I've read the entire Survivors Club series and enjoyed every book. This was a wonderful ending, entirely satisfying, if slightly predictable. 
 George, Duke of Stanbrook, was the man who opened his house as a hospital for the survivors of the Napoleonic Wars. Now that all the rest have married happily, he decides it's his turn. He met Miss Dora Debbins, music teacher and sister to Agnes, wife of one of the other Survivors, last year and he impulsively decides to offer her marriage. Both are middle-aged which makes this different from the rest of the stories; George doesn't offer romance, but more companionship and security to Dora. 
 She takes up the offer and the rest of the book is the story of how they must overcome some obstacles from their past and find their own HEAs. 
 I'll miss the Survivors Club, though I was happy that most popped up here once more. A terrific series worth reading again.