He was there, all right. He was there in the most alarming possible way, as a dead weight lurching against me, then swaying and screaming as I tried to straighten him up, and stop the terrible downward drag of his sagging body.

He was sinking lower and lower, clutching at my knees now, refusing to take advantage of the support I was offering him. I strained and tugged, but it was no use. He was too heavy to raise and I could hear the breath wheezing out of his throat and there could be no mistaking the weight of horror that was making him twist and writhe as he sagged—the deadliness of whatever it was that had struck at him in the darkness without making a sound.

He screamed again. It was the kind of agonized protest which could only have come from the throat of a man who hardly knew what was happening to him ... a man with his terror heightened and made more acute by the awful, groping-in-the-dark realization that he was experiencing a torment he was powerless to explain.

There had to be an answer but I didn't know what it was, and when the scream died away and the tugging stopped all I could hear for an instant was the steady droning of the train. Then there was another violent movement close to me and a harsh intake of breath.

My hand shot out, grazed something smooth that whipped away from me and caught hold of a wrist that was much thinner than a man's wrist had any right to be.

Much softer too, velvety soft, and it tugged and jerked in a frantic effort to free itself, holding tight to the knife that it would have taken all of a woman's strength to plunge deep into my heart.

But she could have done it, whoever she was, for there was a wiry strength in her—a strength so great that I had to twist her wrist cruelly before her fingers relaxed and the knife dropped to the floor of the train.

She gasped in pain—or was it fury?—and exerted all of her strength again in a desperate effort to break my grip. And this time luck was on her side. No, call it what it was. Luck may have figured, but most of it was plain blundering stupidity on my part. I was pretty sure I knew what her first, misdirected blow with the knife had done to the man I'd been talking to, and the thought so sickened and unnerved me that my fingers relaxed a little when the knife went clattering, and she took advantage of that to break free.

The passengers were crowding me now, pushing, shoving in alarm, and I knew it would be easy enough for her to force her way between them, still exerting all of her strength and get far enough away to be just one of the thirty terrified people when the train roared out into the light again. They'd all look disheveled, on the verge of panic and I wouldn't have a chance of identifying her.

How could I have identified her with any certainty, even if she'd been the only one with a guilty stare? I hadn't the least idea what she looked like. I only knew that she wasn't old, was all woman in her lithe softness, the opposite of an Amazon despite her strength. The femininity which had emanated from her—how instantly it can make itself felt, how instinctively overwhelming it can be!—had made me feel like a brute for an instant, even though I'd known it was her life or mine and I would have been quite mad to spare her.