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Hodder Childrens Australia: Hachette Livre Australia, 2005. Someone is causing havoc in Nod's Limbs and it's not Edgar and Ellen! The construction of Mayor Knightleigh s new hotel is being blocked by mysterious acts of sabotage. The twins are determined to unveil the saboteur (who leaves a brick at the site of every one of his tricks with the words ''The Mason'' inscribed upon it). The wicked twins descend ''under town'' into the vast maze of tunnels beneath Nod's Limbs. There they find a dusty laboratory with a journal that they assume belongs to The Mason. Beakers and jars in this laboratory are all covered by an odd-smelling white balm.Back above ground, the twins notice that Pet seems to be acting strangely. Could it have something to do with the white balm they've tracked in from the laboratory? Edgar & Ellen are delightfully bad, bad, bad. Children will continue to respond to their outrageous behaviour, as well as cheer on the inevitable conclusion: that Edgar and Ellen's trickery always gets them in the end.<p>. Hardback. New.