Reverend Erik commented on Black Abbot, White Magic by Frater Acher (Holy Daimon Cycle, #2)
This book was pretty good, and while I got a lot out of it, I didn't really get what I needed. I was looking for more depth regarding Trithemius's work on steganography, because I was trying to link it to more Renaissance cryptography stuff. So I enjoyed it, but felt a little let down. Probably my fault.