'I was lost in the desert. Without transport. Without water. Without a hope.' Sam Fox is on a caving expedition in the desert when the roof collapses, trapping his brother Nathan beneath tonnes of rubble. Nathan is in a bad way, and Sam's his only hope. But when he reaches the cave exit, Sam discovers a sea of huge, angry scorpions! And that's just the first deadly obstacle he will have to face if he's to get his brother out alive . . . An action-packed rollercoaster ride, Scorpion Sting is the fourth book in a thrilling new series! Visit puffin.com.au/extreme for more.