Existential Threat: A Post-Apocalyptic Survival Thriller

An ancient killer has returned. This time, it will take us all.

Prometheus was more than an asteroid. It was a cosmological time capsule eons in the making, revealing that space is an even bigger mystery than could be fathomed.

As a paleoarchaeologist, Dallas was no stranger to ancient mysteries. But after witnessing the destruction of millions of lives, she’ll need more than determination to stop it from becoming billions. Broken, alone, and with nowhere else to turn, she teams up with an unlikely group destined to save mankind.

Kyle would never call himself a hero. As an astronomer working to keep the planet safe, he’ll forever question whether he could have somehow prevented the number of people lost. But he can still fight for his daughter and, in doing so, find a way to stop what’s been unleashed before nothing is left.

Except that in a world where power is the ultimate goal and the masses are considered expendable, human nature will prove to be the most significant obstacle they have to overcome.

Existential Threat is book 2 in The 6th Extinction, a Post-Apocalyptic trilogy from Tara Ellis! This series explores every facet of global disasters and how far people will go to survive. It's perfect for fans of Kyla Stone, Bobby Akart, Jack Hunt, and Ryan Schow.

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Release date

Audiobook: October 14, 2025