M. and Thok letter (part 5) is a book obtained while training Dungeoneering as a reward for completing a dungeon which appears by the exit door after the boss monster is killed. It can also be obtained as a monster drop from any monster in Daemonheim. It, combined with the other parts of the book, make up the full tale of Marmaros and Thok's adventures throughout Daemonheim. Once the book has been obtained once it is impossible to obtain it again. However, it can still be read by talking to the Dungeoneering Tutor to view the Dungeon Journal along with all other texts obtained in Daemonheim.
Honestly who would be crazy enough to use a book as a weapon? Mad Melzar maybe, but there's no telling if he's even alive anymore. Just our luck, then, that we stumble on a crazy libraromancer, or whatever you want to call him, who pelts us with books rather than, I don't know, rocks, weapons, or bones of the dead. This place must have a hell of a grip on the mind.
The books got me thinking about why I write these letters. There's the obvious reason: it takes my mind off this endless dungeon, but I think that's missing the point. Even with Thok, the human shield, I can't help but feel that we won't make it. These letters are little scraps of our story, and I naively hold onto a hope that you'll get them, or someone else will find them useful. With the rest of my illiterate clan above us (hell, they make a lot of noise) that hope seems misplaced, but you never can tell,M. and Thok