“But I say, sir,” Desmond interposed hastily. “You haven’t told me what I am to do. What part am I to play in this business anyway?”

“To-morrow,” said the Chief, buttoning up his coat, “you become Mr. Basil Bellward!”

CHAPTER VIII.
THE WHITE PAPER PACKAGE

A taxi was waiting in Pall Mall outside the club and Desmond hailed it, though secretly wondering what the driver would think of taking him out to Seven Kings. Rather to his surprise, the man was quite affable, took the address of the house where Barbara was staying with her friends and bade Desmond “hop in.” Presently, for the second time that day, he was heading for the Mile End Road.

As they zigzagged in and out of the traffic, Desmond’s thoughts were busy with the extraordinary mission entrusted to him. So he was to sink his own identity and don that of an Anglo-German business man, his appearance, accent, habits, everything. The difficulties of the task positively made him cold with fear. The man must have relations, friends, business acquaintances who would be sufficiently familiar with his appearance and manner to penetrate, at any rate in the long run, the most effective disguise. What did Bellward look like? Where did he live? How was he, Desmond, to disguise himself to resemble him? And, above all, when this knotty problem of make-up had been settled, how was he to proceed? What should be his first step to pick out from among all the millions of London’s teeming populace the one obscure individual who headed and directed this gang of spies?

Why hadn’t he asked the Chief all these questions? What an annoying man the Chief was to deal with to be sure! All said and done, what had he actually told Desmond? That there was a German Secret service organization spying on the movements of troops to France, that this man, Basil Bellward, who had been arrested, was one of the gang and that the dancer, Nur-el-Din, was in some way implicated in the affair! And that was the extent of his confidence! On the top of all this fog of obscurity rested the dense cloud surrounding the murder of old Mackwayte with the unexplained, the fantastic, clue of that single hair pointing back to Nur-el-Din.

Desmond consoled himself finally by saying that he would be able too get some light on his mission from Barbara Mackwayte, whom he judged to be in the Chief’s confidence. But here he was doomed to disappointment. Barbara could tell him practically nothing save what he already knew, that they were to work together in this affair. Like him, she was waiting for her instructions.

Barbara received him in a neat little suburban drawing-room in the house of her friends, who lived a few streets away from the Mackwaytes. She was wearing a plainly-made black crêpe de chine dress which served to accentuate the extreme pallor of her face, the only outward indication of the great shock she had sustained. She was perfectly calm and collected, otherwise, and she stopped Desmond who would have murmured some phrases of condolence.

“Ah, no, please,” she said, “I don’t think I can speak about it yet.”

She pulled a chair over for him and began to talk about the Chief.