I did a great deal of research to write 'The Irish Duke.' Since all the people in this Lords of the Realm series are real historical characters, everything had to be authentic. I researched Woburn Abbey, where my heroine lived, and everything about Barons Court in Ireland, which was the ancestral home of Abercorn.
I try to do as much as possible for every character. Some of them, it is easier to do the research because you have either real examples that you work with, maybe some specific person that inspires you in that case, or the performances from other people, or the characters, or a character from a book.
It's true that my research expertise is in biology: for example, the Ebola virus, the Marburg virus, and monkey pox, and not bacteriology as in the case of the anthrax organism. It's also true that I have never, ever worked with anthrax in my life. It's a separate field from the research I was performing at Fort Detrick.