The Secrets of Droon Set (Books 1 - 27)

books 1-27 are listed here: the hidden stairs and the magic carpet, journey to the volcano palace, the mysterious island, city in the clouds, the great ice battle, the sleeping giant of goll, into the land of the lost, the golden wasp, the tower of the elf king, quest for the queen, the hawk bandits of tarkoom, under the serpent sea, the mask of maliban, voyage of the jaffa wind, the moon scroll, the knights of silversnow, dream thief, search for the dragon ship, the coiled viper, in the ice caves of krog, flight of the genie, the isle of mists, the fortress of the treasure queen, the race to doobesh, the riddle of zorfendorf castle, the moon dragon, the chariot of queen zara.