Then he sat upon a box which stood on end, and waited, motionless.
A FEW minutes later, there was a slight tap at the door. The man beneath the robe uttered a peculiar whistle, which was soft, yet clear. The door opened, and Volovick entered. He spoke a few words in Russian. Prokop replied.
“Agent F,” said Volovick, in English.
“Correct,” answered Prokop.
Volovick donned one of the black robes, and stood in an attitude of attention.
“Report,” said Prokop.
Volovick spoke low and rapidly, in Russian. He was giving an account of last night’s happenings. Prokop made no comment.
When Volovick had finished, Prokop made a single remark in Russian. Volovick obeyed it as a command. He opened a door on the far side of the room, and entered another compartment of the cellar.
A second visitor gave the signal outside. This one brought no report. While he was donning his robe, a third person tapped at the door.
Prokop hissed a different whistle. It signified that the person should wait. As soon as the second agent had completed his disguise, and had gone to join Volovick, Prokop admitted the third person.