"Good God, I can't do that!" she muttered, shaking herself. "I've got to think, to think hard. I've got to find a way out of this!"
There was no doubt in her mind as to why she was here. She was dangerous to the doctor; she possessed information which would ruin him. He had overheard her conversation on the telephone; more than that he had probably received and opened the chemist's report when it came to the villa. Without doubt he had had something of this sort in mind when he came and suggested driving her to her pension. He hadn't meant to let her out of his sight; he had even inquired about what friends she had to ascertain whether there was much danger of her being traced. He had meant to get her alone in his car, then stupefy her in some way and bring her here. Her telephoning to the chemist had precipitated matters, made him take a desperate chance and act quickly. At least that was how she construed things. How he had managed to get her out and into his car was a mystery. She had just sent that message to Roger, she recalled. Two minutes, one minute's delay, and the bold plan would have miscarried. Would they miss her at the villa—Miss Clifford or Roger? With a sinking heart she knew they were not likely to for some days. She had said good-bye to the former. Roger indeed might think it a little odd, her sending for him and then going away, but he would hardly imagine anything seriously wrong. No, there was no chance at all of her being sought for, at any rate not here. No one would ever think of looking here.
How had she lost consciousness so completely, so instantaneously? Ah, of course! That stab in her arm, it had been the wound of a hypodermic needle, that weapon she now so closely associated with the doctor. Her arm felt sore to the touch, a spot near the shoulder. She had been doped, kept stupefied—she had no idea for how long. What a risk the man had taken! That proved conclusively how much he feared her. She knew him for a murderer, she alone. His own life was in peril, as well as all his hopes for reaping the benefit of his crime, as long as she was free to tell what she knew. There was no one but herself to give him away, no one else to say how he had cold-bloodedly done away with one victim and now was laying a trap for another one… for Roger….
Roger! As the thought struck her she almost leapt to her feet in consternation. He was in danger now; he had no suspicion to protect him. Unless he held firm against that anti-toxin he was already doomed. How could she tell if they had already overcome his prejudice? Perhaps he had by now had the injections, one, two even. If he had, nothing could save him, she knew that. Her heart grew cold with fear.
Still, there was a loophole of hope. He had distinctly assured her he had made up his mind against the anti-toxin. If only he could be depended upon to remain obstinate! The danger was that he might at any moment yield to the persuasions of his aunt. He hated to distress her needlessly. After all, his resistance was only a caprice; it could not be depended on as a safeguard. It came to her with dreadful certainty that there was no one who could warn him but herself—and she was a prisoner, several miles away. For the moment her own possible fate scarcely concerned her at all. It was the thought of Roger's position which drove her nearly frantic, impelled her to rise with tottering, cautious steps and investigate her prison.
She crept, trembling, to the door and tried the handle. It was locked, of course; she had known it would be. She clung to the knob and looked around. The room, built for a studio, had no window, only a sloping skylight, which was firmly fastened. The atmosphere was close, that of a room long shut up, flavoured with tobacco-smoke and the clean, pungent odour of carbolic. Dust lay on the furniture, but here and there it was disturbed in streaks, showing that someone had been there recently. She wondered if she was all alone in the house. She remembered that Jacques was away on holiday. Yet it scarcely seemed likely that Sartorius would care to risk leaving her completely unguarded. Again she listened, leaning against the door, conscious of extreme weakness and trying hard to keep her teeth from chattering. No sound whatever came from the rooms below; the silence somewhat reassured her. She resolved at once to see if there was any possible way of escaping. Yet as she left the door and took a cautious step towards the centre of the room, perspiration broke out all over her body and ran in streams down her back, her limbs, her face. She felt her knees give under her. Whether all this was due to pure weakness or in part to fright she could not tell, but it occurred to her as possible that she had been here several days without food and repeatedly drugged. How she came to be conscious now caused her a fleeting wonder.
If only there were a telephone in the room—but the one instrument was on the ground-floor. There seemed no possible means of communication with the outside world. She could scream, of course, but that would only serve to alarm anyone who happened to be in the house, or even if the house was empty she could scarcely hope that her voice would be heard far below in the street. The one chance that suggested itself to her was the skylight. It seemed just faintly possible that she might be able to get through it and somehow down to the ground. It presented decided elements of danger, undoubtedly, but there was no choice. She knew too well what it would mean if she stayed here. No, it was the skylight or nothing; she must think how the attempt could be managed.
Clutching on to the back of a chair for support, she eyed the sloping glass above her and made certain rough calculations. If she mounted upon a chair placed on the table she might fairly easily unfasten the big central group of panes, which was the part that opened outward. She even thought she could contrive to climb up to the opening and get outside, but after that came the rub. She would have to slide off the side of the roof and drop to the ground, and common sense told here there was not a chance of her reaching the ground without a broken leg or arm, even if she was not killed outright. The distance was too great; there was nothing to break her fall. There was no use whatever in getting outside the house if she was going to be too disabled to go farther. She must try to find something she could turn into a sort of rope to cling to. Her eyes sought rapidly about and fell upon the long red curtains. The stuff seemed thick and strong; she could perhaps tear them up into strips, knot the lengths together and so make something that would serve for part of the distance, at any rate. If it didn't reach to the ground, she must chance it. She would have to be quick about it, too, for something warned her she was not likely to be left very long alone. Indeed, she was sure within her that the doctor had meant for her to remain unconscious, never wake up again. The idea filled her with a sickening horror, so that she had to set her teeth hard together to stop their chattering.
Standing upon the chair she began with shaking fingers and as hurriedly as she could to undo the rusted curtain-hooks from their big wooden rings. She had managed only the first one when a sound from the street below made her stop and listen, petrified. A car had stopped. She waited, breathless, and an instant later heard the loud bang of the street door. Like a flash she was down again on the floor, and in one panic-stricken movement had slithered back on the camp-bed and drawn up the army blanket over her, as it had been when she came to. As far as she could remember it she arranged herself in her former position, half turned towards the wall on her right side. Thank Heaven it was darker now. She recalled with gratitude the fact that there was no electric fixture in the alcove. If anyone came, she must do her utmost to appear unconscious, and trust to the sheltering gloom to aid her in the deception.
She waited and waited. Long minutes went by; it might have been half an hour, but it was probably not nearly so long. Her body began to be so cramped she felt she must move or die; moreover, it was some time before her heart ceased beating so violently as to lift the blanket. At last when she thought she could bear no more the footsteps of two persons mounted the steps to the laboratory. The key grated in the lock of the door. With an inward desperate prayer she closed her eyes and relaxed the muscles of her face, just as the door swung open and the light flashed in her face from the larger part of the room. It was only a dim light in here, though. She knew that the lamp, a high-powered one with a green shade, shed its rays straight down on the work-table.