An Officer's Alliance by Violet Hamilton, Paperback book-Acceptable Condition

From the moment Ariel first looked inot the hot smouldering eyes of Captain Ian Montague, she knew he was exactly the sort of hell-raising scoundrel she most abhorred. So when she waas unwittingly compromised through his disreputable pursuits, she was mortified to find herself forced to marry him. Her only comfort was that as Montague's wife, it was easier for her to infiltrate the salons of London, ferreting out the information so vitally important to Castlereagh, the British Foreign Secretary. Even Montague's maddening sense of humor-and sense of passion-was endurable if it helped the British cause... Series-Captains #1