The beetle adventure continues as Darkus and his friends seek wicked Lucretia Cutter's secret Biome in the Amazon rainforest. If they can't stop her from unleashing her hoard of giant Frankenstein beetles, the planet will never be the same again ... The final book in the Beetle trilogy, following Beetle Boy and Beetle Queen, the former of which has sold in 36 territories worldwide and was the winner of the Branford Boase Award 2017.