This note can be read from the inventory and then used. Folding the note in the right sequence will solve the puzzle and grant a reward. Each corner of the note is marked: * Upper Left = 0 * Upper Right = 1 * Lower Right = 2 * Lower Left = 3 His contract number is the key: 1201. So the solution is: * Upper Right * Lower Right * Upper Left * Upper Right * Unfold the Pyramid (The dialogue sequence is 11211)