An expression of relief flitted over the face of Grell's friend. After all, it was something to have the worst postponed. A man may face swift danger with debonair courage, may be undaunted by perils or emergencies of sport, of travel, of everyday life. But few innocent men can believe that a net is slowly closing round them which will end in the obloquy of the Central Criminal Court, or in a shameful death, without feeling something of the terror of the hunted. "The terror of the law" is very real in such cases. Fairfield was no coward, but his nerves had begun to go under the strain of the suspense. It would have been different had he been able to do anything—to find relief in action. But he had to remain passively impotent.
"Well," he said, "I expect you're very busy, Mr. Foyle. I don't want to keep you."
The detective received the snub with an amiable smile. "I won't force my company on you, Sir Ralph. If you will just dictate to me a description of the string of pearls that Grell showed you, I will go. Can you let me have a pen and some paper?"
Ungraciously enough Fairfield flung open a small inlaid writing-desk, and Foyle took down the description as though he really needed it. As he finished he held out the pen to Fairfield.
"Will you sign that, please? No, here."
Their hands were almost touching. Foyle half rose and stumbled clumsily, clutching the other's wrist to save himself. The baronet's hand and fingers were pressed down heavily on the still wet writing. The detective recovered his balance and apologised profusely, at the same time picking up the sheet of paper.
"I don't know how I came to do that. I am very sorry. It's smudged the paper a bit, but that won't matter. It's still readable. Good-bye, Sir Ralph."
So admirably had the accident been contrived that even Fairfield never suspected that it was anything but genuine. In a public telephone-box, a few hundred yards away, Heldon Foyle was examining the half-sheet of notepaper side by side with the photograph of the finger-prints on the dagger. A telephone-box is admirably constructed for the private examination of documents if one's back is towards the door and one is bent over the directory. Line by line Foyle traced "laterals," "lakes," and "accidentals," calling to his aid a magnifying glass from his waistcoat pocket.