She closed the letter with a little cruel smile, and despatched it by the hand of a servant. Quite early in the afternoon she put on her habit, but did not go straight downstairs, although her horse was at the door. She went to the library instead—a small, large-windowed room, looking on to Oranje Straat. From a drawer in her writing-table she took a key, and examined it closely before slipping it into her pocket. It was a new key with the file-marks still upon it.
“A clumsy expedient,” she said. “But the end is so desirable that the means must not be too scrupulously considered.”
She rode down Kazerne Straat and through the wood by the Leyden Road. By turning to the left, she soon made her way to the East Dunes, and thus describing a circle, rode slowly back towards Scheveningen. She knew her way, it appeared, to the malgamite works. Leaving her horse in the care of the groom, she walked to the gate of the works, which was opened to her by the doorkeeper, after some hesitation. The man was a German, and therefore, perhaps, more amenable to Mrs. Vansittart's imperious arguments.
“I must see Herr von Holzen without delay,” she said. “Show me his office.”
The man pointed out the building. “But the Herr Professor is in the factory,” he said. “It is mixing-day to-day. I will, however, fetch him.”
Mrs. Vansittart walked slowly towards the office where Roden had told her that the safe stood wherein the prescription and other papers were secured. She knew it was mixing-day and that Von Holzen would be in the factory. She had sent Roden on a fool's errand to Park Straat to await her return there. Was she going to succeed? Would she be left alone for a few moments in that little office with the safe? She fingered the key in her pocket—a duplicate obtained at some risk, with infinite difficulty, by the simple stratagem of borrowing Roden's keys to open an old and disused desk one evening in Park Straat. She had conceived the plan herself, had carried it out herself, as all must who wish to succeed in a human design. She was quite aware that the plan was crude and almost childish, but the gain was great, and it is often the simplest means that succeed. The secret of the manufacture of malgamite—written in black and white—might prove to be Von Holzen's death-warrant. Mrs. Vansittart had to fight in her own way or not fight at all. She could not understand the slower, surer methods of Mr. Wade and Cornish, who appeared to be waiting and wasting time.
The German doorkeeper accompanied her to the office, and opened the door after knocking and receiving no answer.
“Will the high-born take a seat?” he said; “I shall not be long.”
“There is no need to hurry,” said Mrs. Vansittart to herself.
And before the door was quite closed she was on her feet again. The office was bare and orderly. Even the waste-paper baskets were empty. The books were locked away and the desks were clear. But the small green safe stood in the corner. Mrs. Vansittart went towards it, key in hand. The key was the right one. It had only been selected by guesswork among a number on Roden's bunch. It slipped into the lock and turned smoothly, but the door would not move. She tugged and wrenched at the handle, then turned it accidentally, and the heavy door swung open. There were two drawers at the bottom of the safe which were not locked, and contained neatly folded papers. Her fingers were among these in a moment. The papers were folded and tied together. Many of the bundles were labelled. A long narrow envelope lay at the bottom of the drawer. She seized it quickly and turned it over. It bore no address nor any superscription. “Ah!” she said breathlessly, and slipped her finger within the flap of the envelope. Then she hesitated for a moment, and turned on her heel. Von Holzen was standing in the doorway looking at her.