Quite suddenly emergency circuits closed and lights flashed in the control cabin, the special signal for a meteor-collision with the outer shell in No. 3 hold. Tawney signalled for the section chief frantically. "What's happening down there?"

"I can't talk," the section chief gasped. "Gotta get into a suit, we're leaking in here...."

"Well, plug up the hole!"

"The hole's four feet wide, sir!" There was a fit of coughing and the contact broke. The signals for No. 4 hold and No. 5 hold were flashing now; while the crew members in the vicinity scrambled for pressure suits someone systematically proceeded to blow holes in No. 9, No. 10 and No. 11 holds....

It was impossible. The reports came in thick and fast. Greg Hunter was in two places at once, and everywhere he went ... in both places ... there was a trail of unbelievable destruction. Bulkheads demolished, gaping holes torn in the outer shell, the air-reconditioning units smashed beyond repair.... Tawney buzzed for his first mate.

An emergency switch cut into the line, with the frantic voice of a section chief. Johnny Coombs had been spotted disappearing into the ventilator shaft in the engine sector. "Well, go in after him!" Tawney screamed. He got his first mate finally, and snarled orders into the speaker. "They're in the ventilators. Get a crew in there and stop them."

But it was dark in the ventilator shafts. No emergency lights in there. Worse, the crewmen were hearing the things that were being whispered around the ship. The ventilator shafts yawned menacingly before them; they went in reluctantly. Once in the dark maze of tunnels, identification was difficult. Two guards met each other headlong in the darkness, and put each other out of the fight in a flurry of nervous stunner-fire. While they searched more of the holds were broken open, leaking air through gaping rents in the hull....

Tawney felt the panic spreading; he tried to curb it, and it spread in spite of him. The fugitives were appearing and disappearing like wraiths. Reports back to control cabin took on a frantic note, confused and garbled. Now the second-level bulkheads were being attacked. Over a third of the compartments were leaking precious air into outer space.

When a terrified section chief came through with a report that two Greg Hunters had been spotted by the same man at the same time, and that the guards in the sector were shooting at anything that moved, including other guards, Tawney made his way to the radio cabin and put through a frantic signal to Jupiter Equilateral headquarters on Mars.

The contact took forever, even with the ship's powerful emergency boosters. By the time someone at headquarters was reading him, Tawney's report sounded confused. He was trying for the third time to explain, clearly and logically, how two men and a ghost were scuttling his orbit-ship under his very feet when one wall of the cabin vanished in a crackle of blue fire, and he found himself staring at two Greg Hunters and a grim-faced Johnny Coombs.