I'm getting ready to DM a Forgotten Realms campaign against the Wall, but I'm not sure if I have all the information I could have.
This will be a sequel to the last campaign we had, where one of the characters managed to get most of the others interested in joining him in a crusade as soon as the preparations are complete; the player in question got the idea after playing a game called Mask of the Betrayer.
Now, I haven't played this game but plan on watching a playthrough of it, but I'm wondering if there's any more information in a book or a supplement or something that I could read; the more info I have on it the better prepared I'll be.
This will be under d&d 3.5e, so anything specific to 4e won't be of use to me. Aside from that, though, anything you could find will be greatly appreciated.