The Martian sniffed. "Frankly, Mr. Murdock, your account of yourself is laconic to say the least." Gavin Murdock grunted, his eyes wary and unblinking. He didn't reply. The Martian raised his eyes from the documents spread on his glassite desk. He gave the sandy-haired Murdock a shrewd penetrating glance and smiled dryly. "Of course, we get very few men in the slave trade who care to talk about themselves. We take that into consideration, Mr. Murdock. But an astro-engineer of your talents...." H