“She preferred a tannin-activated dosing mechanism. Very hard to detect, you understand. Her preferred brand of poison at the time was stimulated by the application of hot water and a chemical component most commonly found in tea.”

Alexia put down her teacup with a clatter.

Lord Akeldama continued, eyes twinkling. “It requires a specialized automechanical nickel-lined teapot. The teapot was to arrive as a gift for Queen Victoria, and the first time she drank from it—death.” The vampire made a gesture with two slim, perfectly manicured fingers curving down toward his own neck, like fangs. “Your little ghost may have supplied the poison, but teapots of that type were made by only one specialty manufacturer.”

Lady Maccon narrowed her eyes. Coincidence was a fateful thing. “Let me guess, Beatrice Lefoux?”

“Indeed.”

Alexia stood, slowly and cautiously by degrees but with evident firmness of intent, leaning upon her parasol. “Well, this has been most edifying, Lord Akeldama. Most edifying. Thank you. I must be on my way.”

Right at that moment, there was a scuffle in the hallway and the door to the drawing room burst open to reveal the dewan.

“What is the meaning of such a summons as I just received?” He barreled into the room all loud bluster, bringing along an odor of London night air and raw meat.

Lady Maccon waddled past him as though the summons had nothing whatsoever to do with her. “Oh, hello, Dewan. The potentate will be happy to explain everything. Please excuse me, my lords. Important business.” She paused, searching for an excuse. “Shopping. I’m certain you understand. Hats. Very critical hats.”

“What?” said the werewolf. “But you directed me to attend you! Here, Lady Maccon! At the house of a vampire!”

Lord Akeldama stood up from his consciously relaxed posture as though he might try to waylay Lady Maccon.

Alexia waved at them both cheerily from the doorway before hobbling out and into her waiting carriage. “Regent Street, please, posthaste. Chapeau de Poupe.”

Lady Maccon barely glanced at the hats. She headed straight through the shop past the sputtering attendant in a, it must be said, very grand Lady Maccon–like manner. “I shall make my own way,” she said to the fretful girl, and then, “She is expecting me.” Which was, of course, an outfight fib but served to mollify the chit. Luckily, for all concerned, the shopgirl had the presence of mind to flip the CLOSED sign and shut the door before anyone could observe Lady Maccon’s disappearance into the wall.

Madame Lefoux was in her contrivance chamber, looking, if possible, even more gaunt and unwell than when Alexia had seen her last.

“My dear, Genevieve! I thought I was the one meant to be laid up. You look as though you could use a week’s rest. Surely this new project cannot be so vital you must damage your health over its completion.”

The inventor smiled wanly but barely glanced up from her work, concentrating on some engine schematic rolled out on a metal crate before her. The massive bowler-hat contraption she was still building loomed behind her, looking more of-a-piece. It was at least three times Lord Maccon’s height, with its podlike driving chamber now seated atop multiple tentacle-like supports.