After telling the Castellan about the adventure with the lizardmen and the spiders (Part I), the Warrior asked if he could become a knight. The Castellan replied it would only be possible to become a Knight of the Realm through extraordinary service to the Keep. Suddenly the Guild Master burst in with urgent news: two out-of-town guests at the Guild House had vanished during the night, and while looking for them the guards had discovered a secret door in the basement where none was previously known. Shortly after it was opened two skeletons had emerged and battled the guards. The guards refused to explore further, and so the Guild Master had come to the Castellan for assistance. The Castellan asked the Warrior if he would investigate, and he agreed. Accompanying the Warrior would be his trusty Dwarf companion, the Castellan's Advisor (an elf), and the Curate of the Chapel. We then looked at the picture of elves and dwarves in the Player's Handbook:
The group arrived at the Guild House and I showed him the map in the back of B2, with the stairs leading to the basement (see above). The Guild Master took them through the the basement kitchen to a small storeroom in the back, and showed them the trap door in the floor. It appeared that a seal on the door had been recently pried open, making it noticeable. The Warrior opened the door and saw a set of stone stairs leading down into the dark. He lit his lantern, and then gave it to the Dwarf so he could descend with sword out and new magic shield in hand. At the bottom of the stairs he spotted two bodies lying on the floor of a dusty room. Two more skeletons then came through a doorway and attacked! The Warrior chopped off the arms of one as it lunged for him, and then broke the rest of it apart, while the Dwarf took care of the other one. The bones crumbled away to dust. The Curate looked over the corpses and found a map that appears to show the level they are on.
Dragonsfoot Discussion of the Dungeon Under the Keep on the Borderlands