After innocently translating from the German what she believed to be a sordid love letter, Miss Cathy Lyman finds herself uncovering vital top secret information on Napoleon. With little but gothie novels to add excitement to her tedious life, she plunged feet first into the exhilarating world of high espionage - especially since the devilishly handsome Lord Costain led the way. His lordship found he 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 honourable....