He said as much to the Prime Minister, and explained his reasons.

“It is ridiculous to suppose,” he argued, “that Melun is such a fool as to think that we shall agree to his terms in this way.

“In the first place, we have no assurance that Lady Kathleen is to be restored to us even for a time, and in the second place, Melun is not the type of man to take anything on trust. Whatever risks he may run in regard to Lady Kathleen he would certainly not leave the handing over of the money to chance.

“No! Let us by all means send a reply to the address he gives, but instead of accepting or not accepting his terms let us word it in this way: ‘Cannot accept any terms by wire. Make appointment at which matters can be discussed. Will guarantee your immunity from disagreeable consequences.’”

The Premier clutched feverishly at this suggestion. “Yes, yes!” he cried. “I see now that it is the better way. Let's send the telegram at once.”

So the telegram was despatched, and Westerham and the Premier sat down to wait again.

Lord Penshurst had suggested that the post-office should be watched in order that Smith-Brown-Smith or his messenger might be watched and followed home.

But Westerham argued against such a course, pointing out that in broad daylight it would be practically impossible for even the most astute of followers to avoid the notice of the pursued.

“Believe me,” he urged, “that such a step would be most unwise, and at the best we should only succeed in arousing Melun's suspicions. And if he thought we intended to try to catch him tripping, it would merely drive him to extremes. Remember that we have to consider not only Lady Kathleen's safety, but the guarding of the secret. We must not push Melun to the point of throwing him into the arms of Germany.”

Somewhat against his will, the Premier finally gave in to this argument. For the next two hours he sat with Westerham alert, anxious, and watchful.