North America. Because Iâd feared for the Keen-Earsâ safety if their existence became generally known, I had not revealed that invisible animals turn visible in death, or that Evieâs puzzling bee had come to the New World with invisible humans who still farmed its descendants for honey.
Helen listened (patiently, considering the irritating, unnatural voice in which I spoke) and spun. There wasgoing to be a long stretch of invisibility in her thread, where the Grand Tour cocoons spun out, and I wondered what sheâd use it for. In her braidsâ tips hung some dark, wrapped objects resembling cigars for dolls, and I envied herâartistic, enjoying life, with Truth Bats.
âI had no choice,â I sniffled. âI deliberately misled Evie about those bees. What else could I do? Was I supposed to open the door to genocide? So I lied. My bats disappeared. All my life Iâve had Truth Bats. Now theyâre gone, and anything I say, like âall my life Iâve had Truth Batsââit doesnât sound true. It sounds like I donât know what. Helen, you know, the bats are not even comfortable with social fibs, and Iâve gone and told a big lie to my sister. That doesnât sound true either. God, I want my bats back!â
âPoor old God,â Helen murmured, guiding her evolving thread. âWell. What will bring your bats back?â
âTelling Evie the truth. Until I do, my voice is polluted by deceptive stress,â I explained with unnerving glibness.
âThen tell. Trust Evie. Donât you trust your sister?â
âShe has an obligation to science.â Helen tut-tutted as if the ambiguous ethics of scientific research were a minor tangle in her skein. Her voice, I noted wistfully, was mild, full, and wholesome as sweetgrass.
âSophie, in your shoes, I would figure it this way. I would rather get back my bats, and have Evie find out about the Keen-Ears, than live with a lie and wait for some unknown person to discover them. You know it will come. You canât hide a natural fact.â She licked her thumbsto feel the invisible thread as it passed through them. I threw back my head, inhaled the honeysuckle scent, and shut my eyes. After a while, the purr of the spinning wheel paused and Helen said, âWhy donât you go down to the barn and call her now?â
A FTER Iâ D CALLED E VIE from Helenâs barn, I ran up the porch steps, and my cousin rose to hug me. My joints were trembling as if Iâd dropped a loaded barbell, but I had no time to linger. My sister, grasping only that I had urgent business, had said to drop by now, while she had an opportune moment. Helen wished me good luck. As I drove into town and hunted for a parking space around Evieâs campus, I rehearsed aloud phrases of apology and ethical pleas, all of which sounded like excuses and false promises; they left me feeling vaguely felonious as I trotted down the corridors of the Life Science Center, through the noise mix of freezers and centrifuges, past office doors, laboratories, and the absentminded or cordial faces of Evieâs colleagues and students. I found Evie in a small workroom adjacent to her main lab.
âCome in,â she said. âLetâs talk while I feed the Worm.â
Entering, my nostrils contracted. The dim room smelled of mold, with substenches that evoked thoughts of continents passing through the guts of earthworms. Around the walls, floor to ceiling, ran shiny brown tubing like a coiled snakeskin: this was the Worm. If you uncoiledit, youâd have a torusâa donut-shaped tube filled with silts, clays, sands, loams, and small wildlife: bacteria, fungi, nematodes. The Worm helped Evie to experiment with soil gases. Its âskinâ was her invention, a polymer sheath containing molecular valves and electronic sensors. As soil gases within hit the valves, thumbtack-sized âscalesâ covering the Worm