Sight is one of the most easily deceived senses. I could make a coin disappear and your eyes would believe it gone, even if it were merely up my sleeve.

I think The Nightingale is my best, most mature, most moving novel, but maybe that's just because I love these characters. I love the setting.

In the end, the best part of the whole book [The Nightingale ] to me was the research, reading about the courageous, ordinary French women who put their lives on the line to save others. It was really inspirational.

There were others, women with stories that were told in a quieter voice: women who hid Jewish children in their homes, putting themselves directly in harm's way to save others. Too many of them paid a terrible, unimaginable price for their heroism. And like so many women in wartime, they were largely forgotten after the war's end.There were no parades for them, very few medals, and almost no mention in the history books.

I had read a lot of books on World War II, but I didn't know that downed airmen had hiked over the frozen peaks of the Pyrenees Mountains in shoes that didn't fit, in clothes that weren't warm enough, with German and Spanish patrols searching for them.

I simply couldn't walk away from [ The Nightingale].

[ The Nightingale ]ended up being a huge undertaking - a daunting amount of research on a subject that many people know intimately, a country I had not yet been to when I first started planning the book, an entire war.