The Great Christmas Ball
Smith, Joan
IT SEEMED FAR LESS DIFFICULT TO NAB A SPY THAN TO CAPTURE THE HEART OF AN ELUSIVE GENTLEMAN.

In translating from German what she believed to be a sordid love letter, Miss Cathy Lyman uncovered top secret information on Napoleon. With little but gothic novels to add excitement to her somewhat tedious life, she plunged into the world of high espionage with eager anticipation--especially since the devilishly handsome Lord Costain led the way.

His lordship had no choice but to tell the inquisitive Miss Lyman that he suspected there was a traitor among them. She insisted on joining in the intrigue, deception, and danger though it became hard to ignore her own suspicion that Lord Costain's intentions might not be altogether honorable....