folded over and constituted its own envelope. It was addressed to "J. B. Harden, Esq." ("That was the alias he used when he took the wine vaults at Paddington," explained McNorton) and had been posted about a week before. Attached to the bottom of the account, which was for £3 10s., was a little slip calling attention to the fact that "this account had probably been overlooked."
Beale's finger traced the item for which the bill was rendered, and McNorton uttered an exclamation of surprise.
"Curious, isn't it?" said Beale, as he folded the paper and put it away in his pocket, "how these very clever men always make some trifling error which brings them to justice. I don't know how many great schemes I have seen brought to nothing through some such act of folly as this, some piece of theatrical bravado which benefited the criminal nothing at all."
"Good gracious," said McNorton wonderingly, "of course, that's what he is going to do. I never thought of that. It is in the neighbourhood of Horsham we must look for him, and I think if we can get one of the Messrs. Billingham out of bed in a couple of hours' time we shall do a good night's work."
They went outside and again questioned the policeman. He remembered the car turning round and going back the way it had come. It had probably taken one of the innumerable side-roads which lead from the main thoroughfare, and in this way they had missed it.
"I want to go to the 'Megaphone' office first," said Beale. "I have some good friends on that paper and I am curious to know how bad the markets are. The night cables from New York should be coming in by now."
In his heart was a sickening fear which he dared not express. What would the morrow bring forth? If this one man's cupidity and hate should succeed in releasing the terror upon the world, what sort of a world would it leave? Through the windows of the car he could see the placid policemen patrolling the streets, caught a glimpse of other cars brilliantly illuminated bearing their laughing men and women back to homes, who were ignorant of the monstrous danger which threatened their security and life.
