“Call a meeting,” said the Red Envoy. “Make it the night before Cranston is to come to see Zuvor. Give the bomb to the proper agent. Have it timed for ten minutes after nine. Place it in Zuvor’s house. The explosion will kill both our enemies.”
“And Ivan Shiskin, also,” added Prokop, in a pleased voice. “I shall give the bomb to Fritz Bloch — Agent K.”
“No,” said the Red Envoy thoughtfully. “Send Fritz a gray card. We do not want him at the meeting, if there is any danger that Prince Zuvor might suspect.
“Should Fritz come to the meeting, give him the bomb. If he is not present, send him a green card — which will tell him to leave immediately, because of threatening danger. Then he will be away.
“Agents B and M — those who are now watching Zuvor’s house — can attend to the planting of the bomb.”
“Very good,” replied Prokop. “I shall summon both of them to the meeting. How about Agent F — Volovick? I sent him a yellow card, you remember.”
“Bring him to the meeting. He has been away long enough. Send him a black card.”
Prokop could not control his delight, as he carefully wrote down the Red Envoy’s instructions. The spectacle of both Prince Zuvor and Lamont Cranston being blown to eternity was most pleasing to his imagination.
“But remember,” interposed the Red Envoy, “this must not go into effect unless we have managed to obtain Whitburn’s plans. But I expect to have them — very soon. I myself am going to Lake Marrinack.”
This prospect surprised Prokop. He had not expected action on the Red Envoy’s part. For a moment, he was tempted to object to this usurping of his power; then he realized that the Red Envoy was master.