My daughter saw the tape first. Under my six-year-old niece's swimsuit strap were fresh stitches, and Lily whispered, "It wasn't an accident." Then Sarah texted, "Shut up and turn around, or I'll say you signed the consent." The ER consent paperwork named me responsible; Sarah went white.

By three in the morning, the rain had turned into a thick, low-lying fog. I drove to an old lakefront cabin near Lake Geneva, Wisconsin, that had belonged to my late grandmother. It had been abandoned for three years, off the grid, with no Wi-Fi, no smart devices, and no digital footprints to track.

I carried Lily inside and laid her on the dusty sofa. She was burning up, her breathing shallow and ragged. Emma sat beside her, gently stroking her cousin's hair with a damp washcloth.

"Is Lily going to sleep for a long time, Mom?" Emma asked quietly.

"No, sweetie," I said, though my stomach was tied in knots. "We're going to fix this tonight."

I found an old medical kit in the bathroom cabinet—rubbing alcohol, gauze, scalpel blades, and local anesthetic from when my grandfather used to treat farm animals. I had spent four years in nursing school before switching my major to business. I knew how to hold a scalpel. I knew how to sterilize a field.

But operating on my six-year-old niece on a kitchen table in an abandoned cabin was something I had never trained for.

My phone, which had been turned off in my coat pocket, suddenly vibrated once. A single text had made it through before the battery died completely.

It was an audio file from an unknown number.

I pressed play.

David's voice came through the speaker, ragged and breathless: "Evelyn... if you're listening to this, they have me. Sarah is with them. She didn't sell Lily for debt, Evie... they tricked her. They told her Lily had a fatal genetic anomaly and that the device was a life-saving treatment... Sarah realized too late what they were actually doing. She tried to back out, but they threatened to frame her for child endangerment... Evelyn, the device in Lily's back... it has a auto-destruct failsafe. If it isn't removed using a specific magnetic pulse sequence, or if the capsule's core temperature exceeds 104 degrees... it releases a lethal dose of cellular neurotoxin to protect the biological sample from being compromised..."

The recording cut off with the sound of a door crashing open, followed by static.

I dropped the phone onto the table.

Lily groaned. I rushed over and placed my hand on her forehead.

She was burning up. I grabbed the digital thermometer from David's bag and slipped it under her tongue.

The digital readout beeped.