Death is a Debt by Antony MacGinnis - Free

In the harsh world of Regency London, Major Villers Croft promises to protect a mysterious lady from danger and then carelessly betrays her. Later she is found dead. Was it an accident, or murder? Who was she? What danger was she in? And from whom? Croft's guilt and sense of honour compels him to discover who she was and how and why she died.