Cruel beetle fashionista Lucretia Cutter is still at large with her yellow ladybird spies. And now that she's brainwashed Darkus's father to stay by her side -- he, Virginia, and Bertolt are determined to stop her... once and for all. The final installment in the Beetle trilogy flies readers to Lucretia's secret Biome hidden in the Amazon rain forest. If they can't stop Lucretia, she will release her hoard of giant Frankenstein beetles, and the planet will never be the same again... Hope rests on an army of beetles and three determined children. Can Darkus and his friends, human and beetle alike, find it before it's too late?