Secrets of Dripping Fang, Book Six: Attack of the Giant Octopus

After Wally's brush with death by insulin shock (a lesser-known means of assassination, for sure), he and Cheyenne are more determined than ever to stop the Ont Queen and her millions of minions from enslaving the human race and ending life on Earth as we know it. But how can two orphans overthrow an entire army of freakishly massive ants? And further, how do we know that the Ont Queen won't resort to even more creepy and unusual methods to try to exterminate Wally once and for all?
Well, these two scrawny kids have managed to survive this long, haven't they? They might just make it through one more book.