Aw, thanks!!!

Most fun: The Flash books! No question. I've been a Flash geek since I was like 5 years old, and when I got to actually put words in his mouth and a spring in his step... Just pure joy for six books. The deadlines were absolutely INSANE, but I didn't care. 😀

Most challenging: Wow, well, After the Red Rain was tough, but that's because there were three of us working on it! For my own books, I would say my new ones -- EDITED and UNEDITED were the most challenging. UNEDITED because of its sheer length and complexity, then EDITED because I was trying to cut down and patch up that longer story in a way I'd never intended.

Thanks for the question!