On page 139 dresden indicates that they are robbing Hades vault, but does he actually know at that point in the book???

In the newest book, Dresden comments on page 139 that

"...I really didn't feel like making a run on Hades' vault..."

However, at that point in the book, (and I have not gone back to read it over) I'm not certain he knew they were going to Hell.

I was wondering if anyone else had seen the discrepancy or if I had missed an earlier reference.