"I repeat," Danzer barked, "the missing surrogate is _not an Earth model_! The factory operators had been filling orders for the planet Algol IV. When they ran short of Earth models for humans, they substituted an Algolian model. Since the sale of a surrogate is illegal anyhow, they figured the customer would have no kickback." Garvey sighed with relief. He had been afraid he had a small dinosaur in the packing case, at the very least. "Perhaps," Danzer continued, "the holder of the Algolian surrogate does not appreciate his danger yet. It is true, of course, that the Algolians are of the species _homo sapiens_. It has been established that the two races share a common ancestry in the primeval past. But Algol is different from our Earth. "The planet Algol IV is considerably heavier than Earth, and has a richer oxygen atmosphere. The Algolians, raised in this physical environment, have a markedly superior musculature to that of the typical Earthman. Colloquially, they are strong as rhinos. "But the surrogate, of course, does not know this. She has a powerful and indiscriminate mating drive. _That's where the danger lies!_ So I say to the customer--give yourself up now, while there's still time. And remember: crime does not pay." The radio crackled static, then hummed steadily. Garvey turned it off. He had been taken, but good! He really should have inspected his merchandise before accepting it. But the crate had been sealed. He was out a very nice chunk of money. But, he reminded himself, he had lots of money. It was fortunate he had discovered the error in time. Now he would jettison the crate in space, and return to Earth. Perhaps real girls were best, after all.... He heard the sound of heavy blows coming from the crate in the after cabin. "I guess I'd better take care of you, honey," Garvey said, and walked quickly to the cabin. A fusillade of blows rocked the crate. Garvey frowned and reached for the de-activating switch. As he did so, one side of the heavy crate splintered. Through the opening shot a long golden arm. The arm flailed wildly, and Garvey moved out of its way. The situation wasn't humorous any more, he decided. The case rocked and trembled under the impact of powerful blows. Garvey estimated the force behind those blows, and shuddered. This had to be stopped at once. He ran toward the crate. Long, tapered fingers caught his sleeve, ripping it off. Garvey managed to depress the de-activating stud and throw himself out of range. There was a moment of silence. Then the surrogate delivered two blows with the impact of a pile driver. An entire side of the packing case splintered. It was too late for de-activation. * * * * *