During their last adventure, Zak Nine and Erro found a mapping device in a crashed prison ship. Other than an occasional giant scorpion, the boys seem to be safe on the endless sands until they spring a deadly trap! Huge rocky walls spring up from beneath the sand, grinding against each other and forming into walls, passageways and stone cages.

Binding: Paperback;40 pages; Publisher: Capstone Global Library Ltd; Classification: Children?s / Teenage fiction and true stories; Weight: 188 g; Dimensions: 122 x 176 x 3

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