After half an hour's hard thinking he tossed away his fourth cigarette, loosened the pistol in his armpit holster, and slipped out of the room. He went to the captain.

"You think, then, that your life is in danger because you happened to be talking to that old Martian when he was murdered?" asked the captain, when Penrun had finished.

"No question about it," declared Penrun. "Two attempts have been made already."

"Hmm," said the captain, frowning. "A most remarkably strange business. I've never had anything like it aboard my ship in the twenty years I've been traveling the Void."

"I can pay for the space-sphere," urged Penrun. "My certificate of credit will take care of it with funds to spare. All you have to do is to let me cast off at once. If any questions are asked, you can say it was my wish."

"Hmm! Really, Mr. Penrun, this is a most unusual request. I'm not inclined—"

He stared at the communication board. The meteor warning dial was fluctuating violently, showing the presence of a rapidly approaching body—a meteor, or perhaps a flight of them. Gongs throughout the liner automatically began to sound a warning for the passengers to get into their space suits. The captain sat as though petrified.

Penrun sprang to the small visi-screen beside the board and snapped on the current. Swiftly he revolved the periscope aerial. There appeared on the screen the hull of a long, rakish, cigar-shaped craft which was overhauling the liner. The stranger was painted dead black and displayed no emblem.

"There's your meteor, Skipper," he remarked ironically. "And I am the attraction that is drawing it to your ship for another murder. Do I get the space-sphere?"