"It's the best I could do." She handed it over. It read:
"Please allow the bearer to come in and see me on important business at any time he may present this.
"Good!" said Astro. "Now you must wait here and listen at the window till you hear my whistle. Then come right along the roof to me and be ready for anything."
He started to open the door when she put a hand on his arm. "Does it begin with 'C-a-n'?" she asked breathlessly.
He nodded. "How did you get it?"
"From the lieutenant's letter."
"Of course. Well, it may have begun with 'D-a-n' by this time."
"D-a-n-g-e-r?"
"Perhaps. Be ready!" And he was down-stairs.
At the door of the Assassins' Club, a white-haired negro answered the bell.
Astro presented the letter. "I wish to see Lieutenant Cameron immediately!" he said.
"Ah, don't perzactly know, sah," said the darky. "Mah o'ders is not to leave nobody come in yah. Ah expect Ah'd better say no, sah."
Astro brushed past him and had set his foot on the stair, when a fat face looked down over the balusters. The portly form of Herr Beimer followed it.
"Vat's de madder?" he inquired, as he started down.
Without further parley Astro ran up the stair, and, before there was any time for resistance from the astonished German, grasped him by the knees, and pull-
