at once exactly what he should do. Since this hypothetical course was actually pursued by the other, Harley's belief was confirmed.
Craning his neck, he saw the little French car turn abruptly and proceed in the direction of Victoria Station. Instantly he acted.
Leaning out of the window he thrust a ten-shilling note into the cabman's hand. "Slow down, but don't pull up," he directed. "I am going to jump out just as you pass that lorry ahead. Ten yards further on stop. Get down and crank your engine, and then proceed slowly over the bridge. I shall not want you again."
"Right-oh, sir," said the man, grinning broadly.
As a result, immediately he was afforded the necessary cover, Harley jumped from the cab. The man reached back and closed the door, proceeding on his leisurely way. Excepting the driver of the lorry, no one witnessed this eccentric performance, and Harley, stepping on to the footpath, quietly joined the stream of pedestrians and strolled slowly along.
He presently passed the stationary cab without giving any sign of recognition to the dismounted driver. Then, a minute later, the cab overtook him and was soon lost in the traffic ahead. Even as it disappeared another cab went by rapidly.
Leaning forward in order to peer through the front window was the dark-faced man whom he had detected on the Embankment!
