I have been everywhere, solved all the puzzles and picked up everything I need. When I went back to Giza to get the site pass to Santorini Island, there was no letter from Gil on the desk. I checked my inventory and I am missing the Atlantis disc, which I was sure I picked up in the basement at Lord Bathelwaite's. So, I returned to all the sites and searched everywhere, but can't find that disc. Has this happened to anyone else and do you have any suggestions? I don't understand how it could have disappeared from the knapsack. Please help!

Try again and look at the crate at the cellar at Bathelwaite's. It is quite dark in that crate.

Thanks MAG! I'll give it a try.

Appreciate the help.