Then both young men departed in a cab. At the railroad station, however, an unusually generous stranger offered Gray a motor cycle for nothing. So he strapped his bag to it, nodded a smiling adieu to Halkett, and departed.

Halkett bought a ticket to Maastricht, Holland, which he had no idea of using, and presently came out of the station and walked eastward rather rapidly. A man who also had bought a ticket for Maastricht rose from his seat in the waiting room and walked stealthily after him, making a signal to another man.

This second man immediately stepped into a station telephone booth and called up room 23 at the Hôtel St. Antoine, where two German gentlemen, badly battered, were now conferring with a third German gentleman who had paid no attention to instructions from the hotel office but had gone to room 23, knocked until out of patience, and had then summoned the maître d'hôtel, who unlocked the door with a master-key.

Which operation revealed two Teutons flat on their backs, very carefully tied up with rope and artistically gagged.

This unbattered gentleman now conversed over the telephone with the man at the railroad station.

A few moments later he and the two battered ones left the hotel hastily in a taxicab, joined the man at the railroad station, and drove rapidly eastward.

And before forty-eight hours had elapsed, each one of these four men operating in pairs, had attempted to kill the young man named Halkett. Twice he got away. The third time two of them succeeded in locating him in the little town of Diekirch, a town which Halkett was becoming more and more anxious to leave, as he finally began to realize what a hornet's nest he and his friend Gray had succeeded in stirring up.

And all the while the invisible net of destiny in which he now found himself entangled was every minute enmeshing in its widening spread new people whose fate was to be linked with his, and who had never even heard of him. Among them was the girl Philippa.

PROLOGUE

A narrow-gauge railroad track runs through the woods from Diekirch, connecting the two main lines; and on the deserted wooden platform beside this track stood Halkett, his suitcase in one hand, the other hand in his side pocket, awaiting the shuttle train with an impatience born of deepest anxiety.