He turned in the seat, twisting his neck to peep through the small rear window. "I don't see their cab," he announced. "But of course they're after us. However, Craven Street's just round the corner; if we get there first, I don't fancy Freddie Hallam will have a cordial reception for our pursuers. They must've been on watch at Cannon Street, and finding we were not coming in that way—of course they were expecting us because of Hobbs' wire—they took cab for Charing Cross. Lucky for us.... Or is it lucky?" he added doubtfully, to himself.
The hansom whipped round the corner into Craven Street. Kirkwood sprang up, grasping the treasure bag, ready to jump the instant they pulled in toward Mrs. Hallam's dwelling. But as they drew near upon the address he drew back with an exclamation of amazement.
The house was closed, showing a blank face to the street—blinds drawn close down in the windows, area gate padlocked, an estate-agent's board projecting from above the doorway, advertising the property "To be let, furnished."
Kirkwood looked back, craning his neck round the side of the cab. At the moment another hansom was breaking through the rank of humanity on the Strand crossing. He saw one or two figures leap desperately from beneath the horse's hoofs. Then the cab shot out swiftly down the street.
The American stood up again, catching the cabby's eye.
"Drive on!" he cried excitedly. "Don't stop—drive as fast as you dare!"
"W'ere to, sir?"
"See that cab behind? Don't let it catch us—shake it off, lose it somehow, but for the love of Heaven don't let it catch us! I'll make it worth your while. Do you understand?"
"Yes, sir!" The driver looked briefly over his shoulder and lifted his whip. "Don't worry, sir," he cried, entering into the spirit of the game with gratifying zest. "Shan't let 'em over'aul you, sir. Mind your 'ead!"
And as Kirkwood ducked, the whip-lash shot out over the roof with a crack like the report of a pistol. Startled, the horse leaped indignantly forward. Momentarily the cab seemed to leave the ground, then settled down to a pace that carried them round the Avenue Theatre and across Northumberland Avenue into Whitehall Place apparently on a single wheel.