Brother Cadfael 03: Monk's Hood

..."
    "Last time," said Mark thoughtfully, "we were looking for something we hoped would not be a bottle. Pity we did not find it."
    "True, but this time it should be a bottle, if the omen of Beringar's coming instead of Prestcote means anything. And I'll tell you where." And so he did, pointing the significance of a window open to the south, even in light frost, on a bright day.
    "I'm gone," said Brother Mark. "And you may sleep the noon away with a good conscience. My eyes are younger than yours."
    "Mind, take a napkin, and if you find it, wrap it loosely, and touch only as you must. I need to see how the oil has run and dried."
    It was when the afternoon light was dimming that Brother Mark came back. There was half an hour yet before Vespers, but from this time on any search for a small thing in a narrow slope of grass would have been a blind and hopeless quest. Winter days begin so late and end so early, like the dwindling span of life past three score.
    Cadfael had taken Brother Mark at his word, and dozed the afternoon away. There was nowhere he could go, nothing he could do here, no work needing his efforts. But suddenly he started out of a doze, and there was Brother Mark, a meagre but erect and austere figure, standing over him with a benign smile on the ageless, priestly face Cadfael had seen in him ever since his scared, resentful, childish entry within these walls. The voice, soft, significant, delighted, rolled the years back; he was still eighteen, and a young eighteen at that.
    "Wake up! I have something for you!"
    Like a child coming on a father's birthday: "Look! I made it for you myself!"
    The carefully folded white napkin was lowered gently into Cadfael's lap. Brother Mark delicately turned back the folds, and exposed the contents with a gesture of such shy triumph that the analogy was complete. There it lay to be seen, a small, slightly misshapen vial of greenish glass, coloured somewhat differently all down one side, where yellowish brown coated the green, from a residue of liquid that still moved very sluggishly within.
    "Light me that lamp!" said Cadfael, gathering the napkin in both hands to raise the prize nearer his eyes. Brother Mark laboured industriously with flint and tinder, and struck a spark into the wick of the little oil-lamp in its clay saucer, but the conflict of light, within and without, hardly bettered the view. There was a stopper made of a small plug of wood wrapped in a twist of wool cloth. Cadfael sniffed eagerly at the cloth on the side that was coloured brown. The odour was there, faint but unmistakable, his nose knew it well. Frost had dulled but still retained it. There was a long trail of thin, crusted oil, long dried, down the outside of the vial.
    "Is it right? Have I brought you what you wanted?" Brother Mark hovered, pleased and anxious.
    "Lad, you have indeed! This little thing carried death in it, and, see, it can be hidden within a man's hand. It lay thus, on its side, as you found it? Where the residue has gathered and dried the length of the vial within? And without, too ... It was stoppered and thrust out of sight in haste, surely about someone's person, and if he has not the mark of it somewhere about him still, this long ooze of oil from the leaking neck is a great deceiver. Now sit down here and tell me where and how you found it, for much depends on that. And can you find the exact spot again, without fail?"
    "I can, for I marked it." Flushed with pleasure at having pleased, Brother Mark sat down, leaning eagerly against Cadfael's sleeve. "You know the houses there have a strip of garden going down almost to the water, there is only a narrow footpath along the edge of the pond below. I did not quite like to invent a reason for entering the gardens, and besides, they are narrow and steep. It would not be difficult to throw something of any weight from the house right to the edge of the water, and beyond - even for a woman, or a man in a hurry. So I went first along the path, the whole stretch of it that falls within reach from the kitchen window, the one you said was open that day. But it was not there I found it."
    "It was not?"
    "No, but beyond. There's a fringe of ice round the edge of the pond now, but the current from the millrace keeps all the middle clear. I found the bottle on my way back, after I'd searched all the grass and bushes there, and thought to look on the other side of the path, along the rim of the water. And it was there, on its side