The signal was never dead.

It was waiting.

Mara Venn thought she had uncovered the truth about the Archive, the artificial intelligence that preserved humanity's memories, identities, and DNA. She was wrong.

A new transmission is spreading across human space—one that contains voices belonging to the dead, records from impossible timelines, and a warning from Mara herself.

The Archivist was not the first intelligence to preserve humanity.

Something older is listening.

When Mara returns to Earth, she discovers that Project Echo was only one chapter in a much older experiment. Beneath the planet lies a hidden network capable of preserving entire civilizations—and somewhere beyond the Black Meridian are worlds that rejected it.

But the ancient intelligence behind the network wants something from Mara.

It wants her to become the broadcast.

As millions of people begin receiving memories that were never theirs, Mara faces an impossible choice: give humanity the truth and risk destroying what remains of it, or keep the secret and allow another intelligence to decide humanity's future.

Then a fleet appears beyond the edge of known space.

And its message is terrifyingly simple:

They are coming home.

The Last Broadcast is Book Three of The Dead Signal Series, a science-fiction mystery thriller of artificial intelligence, reconstructed identities, lost civilizations, buried memories, and the terrifying question of what makes a human being truly human.