“Delighted to see you, Mr Moreno. But I should have thought at the moment you could hardly be spared from Spain, more especially the neighbourhood of Fonterrabia, and Madrid.”

“I never take a holiday, sir, unless I feel I am justified. In this instance I am. It is true I had a little private business on in England at this particular time, which does not concern your department. But I have sandwiched that in.”

The grey-haired gentleman listened politely. Moreno, as he knew by experience, did not make many mistakes.

“Some little time ago, Mr Guy Rossett, at present attached to Madrid, gave you some very important information about the anarchist movement in Spain.”

“Ah, you know, do you?” was the cautious answer.

“Of course, I have known it for a long time. For very special reasons I want to know the name of the man or woman who gave that information to Rossett. I will give you my reasons presently.”

The other man thought a moment. “Yes, I remember the details perfectly. Rossett handed us certain memoranda which he had obtained from somebody, whose name he would not disclose.”

“That is exactly like Rossett. I have attacked him direct and he still keeps silence. As an honourable Englishman he remains staunch to his promise. One cannot blame him, although in his own interests it would be better if he were a little less scrupulous.”

The grey-haired man began to get interested. “Give me a few more details, Mr Moreno, so that I can see what you are driving at.”

Moreno unfolded his suspicions briefly. He finished his story with the words, “If you could not make Rossett speak, I cannot. But you have those memoranda in your archives. Will you show them to me so that I may see if I recognise the handwriting.”