"Many authors write only a few books in a lifetime. Kate and I have
written nearly a dozen in a year. You might ask, does quantity sacrifice
quality here? It doesn't happen to. That's why this occurrence is so
exceptional. Kate and I love our characters. There is a reason for
that. It’s because it is truly a captivating world. Writing is a love
affair. Until you have found it, you will never know the potential depth
of it. Kate and I have found it." - Jeff Underwood