"Yes." Erickson nodded. His two companions sat rigidly, staring down. "Yes, we do. Here, I'll show you our line."

He opened the case. From it he took a letter-knife, a pencil sharpener, a glass globe paperweight, a box of thumb tacks, a stapler, some clips, a plastic ashtray, and some things Thacher could not identify. He placed the objects in a row in front of him on the table top. Then he closed the sample case.

"I gather you're in office supplies," Thacher said. He touched the letter-knife with his finger. "Nice quality steel. Looks like Swedish steel, to me."

Erickson nodded, looking into Thacher's face. "Not really an impressive business, is it? Office supplies. Ashtrays, paper clips." He smiled.

"Oh—" Thacher shrugged. "Why not? They're a necessity in modern business. The only thing I wonder—"

"What's that?"

"Well, I wonder how you'd ever find enough customers on Mars to make it worth your while." He paused, examining the glass paperweight. He lifted it up, holding it to the light, staring at the scene within until Erickson took it out of his hand and put it back in the sample case. "And another thing. If you three know each other, why did you sit apart when you got on?"

They looked at him quickly.

"And why didn't you speak to each other until we left Deimos?" He leaned toward Erickson, smiling at him. "Two men and a woman. Three of you. Sitting apart in the ship. Not speaking, not until the check-station was past. I find myself thinking over what the Martian said. Three saboteurs. A woman and two men."

Erickson put the things back in the sample case. He was smiling, but his face had gone chalk white. Mara stared down, playing with a drop of water on the edge of her glass. Jan clenched his hands together nervously, blinking rapidly.

"You three are the ones the Leiter was after," Thacher said softly. "You are the destroyers, the saboteurs. But their lie detector— Why didn't it trap you? How did you get by that? And now you're safe, outside the check-station." He grinned, staring around at them. "I'll be damned! And I really thought you were a salesman, Erickson. You really fooled me."

Erickson relaxed a little. "Well, Mr. Thacher, it's in a good cause. I'm sure you have no love for Mars, either. No Terran does. And I see you're leaving with 

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