'What's worse than mutant cockroaches? Vampire slugs, that's what. They're big and fanged and slimy and suck just about everything. Soon there'll be no trees or plants left on Callisto. Someone has to do something - but Sam and her friend Broc feel so helpless. Why isn't anyone else worried? This is another brilliantly funny story set on Callisto, the nicest planet in the universe (well, most of the time). Book 3 in the "Callisto" series follows the prize-winning "The Cafe on Callisto" and "Space Pirates on Callisto". This is from a best-selling author, winner of 40 awards for her writing. It includes hilarious space fantasy series for 8+ age. It has a targeted marketing.' (Publication summary)