• by S. J. Kincaid
  • Narrated by Lincoln Hoppe
  • 14 hrs and 14 mins
  • Unabridged Audiobook

Publisher's Summary

Tom Raines and his friends are eager to return to the Pentagonal Spire to continue their training for the elite Intrasolar Forces. They're in Upper Company now, vying for spots in CamCo, but soon discover troubling changes: strict new regulations, suspicious agents in positions of power, and the revelation that the Spire is under new military control. The trainees are now cadets.
What begins as an irritating adjustment soon reveals a dangerous shift in reality. Those now in control are aligned with the corporate sponsors who have ruthless agendas. And when the military academy begins welcoming new cadets with questionable neural processors, the first step in a plan with horrifying worldwide ramifications, Tom is desperate to stop it, even if that means keeping secrets from his allies.
Then a mysterious figure, the other ghost in the machine, begins a fight against the corporations, but with methods even Tom finds shocking. And when the enemy comes for Tom, how much can Tom endure in the battle to save himself? He must decide if he can still fight when the odds of success seem to be sliding from his grip.
In this exhilarating, explosive, and heart-rending conclusion to the Insignia trilogy, Catalyst brings Tom and his intelligent, passionate, and brave young friends stunning tests and dangerous confrontations, and through to an impossible future they could never have predicted.


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Customer Reviews

Most Helpful

great story and characters

if i had a dollar for every time one character "considered" another, or furrowed their brow, or had blood flush to their head/ears, i could buy this book 100 times over. other than that, great story, great characters.
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- Tyler Porter

I love this book !

Would you consider the audio edition of Catalyst to be better than the print version?


What was one of the most memorable moments of Catalyst?

when tom escaped from vagreov

What about Lincoln Hoppe’s performance did you like?

it was awesome

Was there a moment in the book that particularly moved you?

when black burn sacrificed himself to save tom and wyatt

Any additional comments?


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- Evan Johnson

Book Details

  • Release Date: 10-28-2014
  • Publisher: HarperAudio