Ellen called and called. Her voice grew weary and her shoulders dropped hopelessly as hours passed without reply.
Borden found where Sattell had crossed the wires so that if the ship took off and went out into space, the control board would show all air vents as safely sealed. But there would remain a small, steady drain of leakage of the ship’s air stores.
He also found a small alteration of the water-recovery system. They would have run out of water on the way home. He found a cunning circuit arranged so that if the ship rose on interplanetary drive and set out on even a hopeless search for home, the instant it went into overdrive its power tanks would fuse and short, and it would be left driveless and powerless, to crash or drift helplessly until its occupants died or went mad of desp
