Norris took his pipe from his lips and stared at it absently.
"You'll remember that Ganeth-Klae, the Martian, and I worked together to invent Indurate. But whereas I was interested in the commercial aspects of that product, Klae was absorbed only in the experimental angle of it. He had some crazy idea that it should not be given to the general public at once, but rather should be allocated for the first few years to a select group of scientific organizations. You see, Indurate was such a departure from all known materials that Ganeth-Klae feared it would be utilized for military purposes.
"I took him for a dreamer and a fool. Actually he was neither. How was I to know that his keen penetrating brain had seen through my motive to get control of all commercial marketing of Indurate? I had laid my plans carefully, and I had expected to reap a nice harvest. Klae must have been aware of my innermost thoughts, but Martian-like he said nothing."
Norris paused to wet his lips and lean against the desk. "I didn't kill Ganeth-Klae," he continued, "though I suppose in a court of law I would be judged responsible for his death. The manufacture of Indurate required some ticklish work. As you know, we produced our halves of the formula separately. Physical contact with my half over a long period of time would prove fatal, I knew, and I simply neglected to so inform Ganeth-Klae.
"But his ultimate death was a boomerang. With Klae gone, I could find no trace of his half of the formula. I was almost beside myself for a time. Then I thought of something. Klae had once said that the secret of his half of the formula lay in himself. A vague statement, to say the least. But I took the words at their face value and gambled that he meant them literally; that is, that his body itself contained the formula.
"I tried everything: X-ray, chemical analysis of the skin. I even removed the cranial cap and examined the brain microscopically. All without result. Meanwhile the police were beginning to direct their suspicions toward me in the matter of Klae's disappearance.
"You know the rest. It was necessary that I leave Earth at once and go beyond our system, beyond the jurisdiction of the planetary police. So I arranged this voyage with a sufficient complement of passengers to lessen the danger and hardship of a new life on a new world. I was still positive, however, that Klae's secret lay in his dead body. I took that body along, encased in the Martian preservative, solidifex.
"It was my idea that I could continue my examination once we were safe on a strange planet But I had reckoned without Ganeth-Klae."
"What do you mean?" I said slowly.
"I said Klae was no fool. But I didn't know that with Martian stoicism he suspected the worst and took his own ironic means of combating it. He used the last lot of Indurate to make that booster, a device which he said would increase our take-off speed. He mounted it on the Marie Galante.