An Old Foe Returns — Charles A. Johnson

The Council of Five have defeated the Onyx of Darkness and reverted its Destined Possessor, Karen the Shadow, to Good--but don't think this is the end of the story of Princess Luanne and Heatheria Winchester. Where one door closes, another has opened in its place. Marisa Winchester and her two sons have moved overseas to Melania, so that the new family-turned-team can be closer together. However, the celebration of the triplets' thirteenth birthday is cut short when they learn that the Onyx of Darkness has survived by merging its power with one of its most faithful servants, who promises him great power for his servitude if he will restore the Onyx to its former glory. Can the Council of Five defeat this new menace, or will Evil finally reign supreme?