I read and revised my notes for the disputation until my lamp burned out, and afterward I slept fitfully; the room was cold and the rain lashed hard against the panes as the timbers creaked. So it was that when I was disturbed by a great noise during a brief slumber, I was at first not sure if it was morning or merely a hallucination of my confused dreams. Gradually, though, the noise became more insistent, and as I awakened to see that it was not yet dawn, I realised that the infernal riot outside my windows was the frenzied sound of a barking dog. I pulled the sheet closer around me, cursing the rector or whoever had thought to keep such a feral animal in the college grounds and curled up in the hope of recovering my ruined sleep, when a second sound joined that bestial dawn chorus, one that I have never forgotten and still, sometimes, hear in dreams. It was the blood-chilling scream of a human being in pain and mortal terror, and it rose in pitch and agony as the creature's barking grew wilder and more vicious.

As the horror of those combined sounds dispelled the last vapours of sleep, I realised that someone not far from my windows was in fear of their life. I supposed it must be some intruder, surprised perhaps by a watchdog, but I could not ignore it, so I hastily pulled on my breeches and a shirt, and set out to find the source of this consternation and see if I might offer assistance.

I emerged from my staircase into the shadowy courtyard. The heavy clouds were broken with veins of pale light and the rain, for the moment, had abated, leaving behind a silvery mist that hung thick in the morning air so that I could barely make out the clock on the north range opposite and had to step forward to read its hands: almost five. The dreadful noise of the hound continued, and from other staircases around the main courtyard figures appeared through the vapour as young men, with hose pulled on under their nightshirts and hair disarrayed, timidly gathered in groups, whispering to one another, unsure whether to come any closer. The din was unmistakably coming from the passageway in the east range that led to the rector's lodgings and the grove, the Fellows' garden I had explored the previous evening. Gathering my wits, I ran the length of the passage to the iron gate, where I found two young men pulling at the handle, to no avail, and peering into the misty depths of the garden. Hearing my footsteps, they turned, their faces ashen.

"Someone is in there, sir, with a wild beast!" cried the taller student. "I had just risen to wash when I heard his cries, but from here we can see nothing."

"We do not have a key!" the other said, frantically. "Only the senior men do, and the door is fast."

"Then we must wake one of the senior men," I said, wondering how the rector, whose lodgings must have windows onto the garden, could possibly be sleeping through this tumult. "You must know where their rooms are-quick, go and wake anyone who could open the gate. Is there another entrance?"

"Two, sir," said the tall student, terrified, while his friend scuttled away up the passage in search of help. "Another gate like this from the passage at the other end of the hall, by the kitchens, and a door in the garden wall from Brasenose Lane, but they are all locked at night."

"Well, the man in there must have got in somehow," I said, frantically, as a throttled voice unmistakably cried, "Jesu, save me! Holy Mother, save me!" Another scream rent the air, followed by mangled cries for help, then a ferocious growling and a truly inhuman sound, a strangled gurgling that seemed to last for minutes. A small crowd of curious and agitated undergraduates was forming behind us, when I heard the rector's voice crying, "Let me through, I say!"

His face was puffy and bleary with sleep, a coat thrown over his nightgown, and he carried in his hand a bunch of keys. He started when he saw me.

"Oh, Doctor Bruno-what is this ungodly disturbance? Who is within-can you see anything? I tried to look from my windows, but the mist and the trees hide all else from sight."

"I can see nothing, but it seems that a wild animal is savaging someone in the garden. He must be helped, and quickly!"

The rector stared at me as if I had just told him a herd of cows had flown over the college, then he collected himself and stepped toward the gate with his keys. But just as suddenly he stopped and turned back to me, his face tight with fear. The terrible snarling and barking continued within, but the human sounds had trailed off. I feared the worst.

"But-but then it would be folly to enter without a weapon if a wild dog is on the loose!" the rector stammered. "It must be killed-someone must fetch the constable or a serjeant-at-arms, who can bring a crossbow. One of you-quickly!" he snapped at the crowd of half-dressed boys who stood at the end of the passageway, staring, openmouthed. "Go for the constable-immediately!" They looked at one another before a couple of them ran out to the courtyard.

"Could we not find a stick or a poker, anything? We must go in, Rector-I fear we may already be too late for the poor wretch trapped in there," I said, urgently holding out a hand for the keys.

The rector looked around in panic. "But-how could there be a dog in the garden?" he asked, as if to himself, his brows knit in perplexity.

"Is it not a watchdog, to keep out intruders?" I asked, now puzzled myself. "Could it not be some thief who has scaled the wall, perhaps?"

"But there is no watchdog," the rector said, his voice tight with panic. "The porter has a dog, but it is an old, blind creature that has only the use of three legs, and it sleeps in his lodge by the main gate. No one else in college is permitted to keep an animal." He shook his head, unable to make sense of the evidence of his own ears; the beast in the garden went on making its hellish noise.

"Step aside there," said a calm voice behind us, and the gaggle of students crowded in the passageway parted to reveal a tall young man with shoulder-length fair hair, dressed incongruously in a fine doublet and breeches, black silk slashed to show a rich crimson lining and topped with an elaborate ruff, looking for all the world as if he were off to a dance or a playhouse in London, not hastily risen like the rest of us in all the confusion. In one hand he carried an English longbow, of the kind the nobility use for the hunt, taller than himself and ornately carved with gilded inlays and green-and-scarlet tracery. In the other he held a leather quiver of arrows decorated with the same design of curlicued vines and gilt leaves.

"Gabriel Norris!" exclaimed the rector, staring at the longbow. "What is this-?"

"You must open the gate, Rector Underhill," commanded the young man, "there is no time to lose, a man's life is in danger."

He spoke in measured tones, despite the urgency of the situation, as if he and not the rector held the authority here. Half dazed, the rector unlocked the gate and the young man stepped through, fitting an arrow to his bow as he did so. I followed him hesitantly, and the rector followed me, keeping close to the wall.

The mist hung heavily between the twisted trunks of the apple trees, playing tricks on my eyes with its shifting shapes. Stepping cautiously through the blue shadows, I glimpsed suddenly in the farthest northeast corner the movement of a large, long-legged dog-by its shape a wolfhound of sorts, I thought, though I could not see clearly. I kept close to the wall as this Gabriel, conspicuous in his gaudy clothes, advanced in steady paces toward the animal, which was still growling and shaking between its teeth a limp black object at its feet. As I moved closer, the mist thinned and I was able to see the animal clearly; its jaws were bloody and daubed with shreds of torn flesh. My heart sank then and my stomach convulsed, for I knew we were too late. The young man paused a few paces away; the dog, catching a scent or a sound, paused in the mauling of its prey and raised its head. For the briefest moment, its snarling ceased and it made a movement toward the young man; as it did so, he let the arrow fly. He was a good shot, despite the thick air, and the animal crumpled to the ground as the arrowhead tore through its neck.