Lady Mairi, a lively widow, spends a passionate evening with a masked man after a ball only to realize too late that he is the one man she has always tried to avoid. Jack Rutherford has no idea who he has just been with, and is determined to find out. However he is both horrified and intrigued when he finds out who the mysterious woman who so entranced him actually is. Then, as he learns about threats against her, he finds himself becoming increasingly drawn into the secrets in her life.