My phone buzzed on the nightstand at exactly seven the next morning. I grabbed it before the ringtone could wake Andrew, squinting at the screen in the early morning light.

It was a text from Rachel.

Rachel: Sallie, I found something. You need to come see this.

There was no explanation, or follow-up message.

I quietly slipped out of bed and checked Andrew. He was still asleep, his breathing slow and steady. I got dressed in the dark, grabbed my things, and ten minutes later, I was backing my car out of the driveway.

As I drove. I couldn't stop thinking about what Rachel had found.

When I arrived at...