At the thought of my sisters I let out a groan. Until then I hadn’t much been bothered by the cold, but now it gripped me with the sudden force of an Atlantic gale: the bitter, biting, paralyzing cold of a winter convoy—the cold of the grave.

I shivered from shoulders to toes and opened my eyes.

The hands of my brass alarm clock stood at a quarter past six.

Swinging my legs out of bed, I fished for my slippers with my toes, then, bundling myself in my bedding—sheets, quilt, and all—heaved out of bed and, hunched over like a corpulent cockroach, waddled towards the windows.

It was still dark outside, of course. At this time of year the sun wouldn’t be up for another two hours.

The bedrooms at Buckshaw were as vast as parade squares—cold, drafty spaces with distant walls and shadowy perimeters, and of them all, mine, in the far south corner of the east wing, was the most distant and the most desolate.

Because of a long and rancorous dispute between two of my ancestors, Antony and William de Luce, about the sportsmanship of certain military tactics during the Crimean War, they had divided Buckshaw into two camps by means of a black line painted across the middle of the foyer: a line which each of them had forbidden the other to cross. And so, for various reasons—some quite boring, others downright bizarre—at the time when other parts of the house were being renovated during the reign of King George V, the east wing had been left largely unheated and wholly abandoned.

The superb chemical laboratory built by his father for my great-uncle Tarquin, or “Tar,” de Luce had stood forgotten and neglected until I had discovered its treasures and made it my own. With the help of Uncle Tar’s meticulously detailed notebooks and a savage passion for chemistry that must have been born in my blood, I had managed to become quite good at rearranging what I liked to think of as the building blocks of the universe.