For this latest installment in my Six-Crossed Knot series, the principal launching points are two canon incidents. The first one is in The Book of Life, when Matthew discovers that Philippe gave Jack Matthew's cello. In the novel, Matthew doesn't discuss it with Jack. All we know is that it disappeared around the time when Napoleon was emperor. When I first read those lines, I demanded answers. What were the circumstances? How did Philippe find out about Jack? I answered the second question earlier in Masque. In Virtue's Cloak, I imagined what could have led Philippe to give Jack the cello.