Signal

The description below assumes you've read Books 1 through 4. If you haven't, it will spoil Adrift's ending.

Four hundred seventeen people died in the same moment, across six states, of nothing at all.

FBI Agent Steve Webb followed those deaths as far as an investigation can go — and then one step further. Now he's somewhere in a world with no roads and no jurisdiction, and his case file points toward Delaney Rim.

Esah and the crew of the Adrift fly north to find him first.

But something in the Black Hills has gone quiet. Travelers talk about places where capabilities fail and people walk off and don't come back. And under the stone, something is trying to be heard.

In the silence, even a whisper carries.

Performed by Luke Daniels — Audie Award winner with over 1,000 titles narrated, including The Three-Body Problem and the Iron Druid Chronicles.