What is the background of the Veen family?

How did Ada and Van first meet? What were the circumstances of their relationship?

What does Van learn about Ada in 1888? What is the effect on him? What does he do?

When Dan dies, what does Demon learn about Ada and Van? What does he tell them and why?

What were the circumstances surrounding Lucette's suicide? Could Van have handled the situation in a better way? Why was Lucette so desperate?

How did Van and Ada meet again in Switzerland? What were the circumstances surrounding their relationship?

In what way does Van justify his relationship with Ada?