I had put my Necromancy of Thay after deciding not to give it to my companions in a pouch in the camp chest. It was in there with some of the items you get from Shovel's grave and after killing the spider boss I realized that the pouch had nothing in it. I had not touched the pouch since putting it in there and now it is just empty. Any remedy to this problem or am I just out of luck for using the Book on this run through?