"In other words," said the ambassador, "you are not sure that it is a booby trap—an invitation to a date with the police?"

"I'm not sure," said Hoddan. "I think I'd better bite. If I have any illusions left after this morning, I'd better find it out. I thought Nedda liked me quite a lot."

"I make no comment," observed the ambassador. "Can I help you in any way?"

"I have to leave the Embassy," said Hoddan, "and there's a practically solid line of police outside the walls. Could I borrow some old clothes, a few pillows, and a length of rope?"

Half an hour later a rope uncoiled itself at the very darkest outside corner of the Embassy wall. It dangled down to the ground. This was at the rear of the Embassy enclosure. The night was bright with stars, and the city's towers glittered with many lights. But here there was almost complete blackness and that silence of a city which is sometimes so companionable.

The rope remained hanging from the wall. No light reached the ground there. The tiny crescent of Walden's farthest moon cast an insufficient glow. Nothing could be seen by it.

The rope went up, as if it had been lowered merely to make sure that it was long enough for its purpose. Then it descended again. This time a figure dangled at its end. It came down, swaying a little. It reached the blackest part of the shadow at the wall's base. It stayed there.

Nothing happened. The figure rose swiftly, hauled up in rapid pullings of the rope. Then the line came down again and again a figure descended. But this figure moved. The rope swayed and oscillated. The figure came down a good halfway to the ground. It paused, and then descended with much movement to two-thirds of the way from the top.

There something seemed to alarm it. It began to rise with violent writhings of the rope. It climbed—

There was a crackling noise. A stun-pistol. The figure seemed to climb more frantically. More cracklings. Half a dozen—a dozen sharp, snapping noises. They were stun-pistol charges and there were tiny sparks where they hit. The dangling figure seemed convulsed. It went limp, but it did not fall. More charges poured into it. It hung motionless halfway up the wall of the Embassy.