The adventure begins! Merryn and Corin are inducted into their most tricksy task yet!

“Merryn Tregonning leapt through the humid Cornish summer night, toppled over the branches of a grasping hawthorn tree and somersaulted through sweet-smelling long grass. “Keep up Corin, we’re late!” Corin was the name of Merryn’s CL500 Mining Unit, half a ton of condensers, circuits, relays, and vacuum cells which could assemble, or disassemble, almost anything on command. The mechanisms of the Unit were encased within a torus shell of smooth metal, and though heavy, it moved ingeniously, barely bending the grass as it steered its vast mass with phenomenal delicacy.”