[quote=@A Heretic]
I was just thinking that due to their nature and my years of knowledge that Walden would be able to spot aspects of your character's personality or oddities that would lead him to suspect you as a demon, or at least somehow demon related. And the black tome is unique to my character not a common book among necromancers (as far as I know, since the only ones that I know of are possibly the mad king and Walden) to others it would just be a regular magic book with a black binding and cover.
[/quote]

The demon within Susanna has been around for a long time and a book that old and that powerful makes an impact. The fact that it is one of a kind (or possible two) would make it more likely for Lilith to recognize it. Things extremely rare objects tend to be more recognizable to people with knowledge of them than common ones would be. By the way does the tome have a name and history?