Tyler Corriveau releases Horizon Fault, Book Two of Transition Age Trilogy

Tyler Corriveau will release Horizon Fault, the second book in the Transition Age Trilogy, on Oct. 24, 2026, sending protagonist Iris Vale into the irradiated ruins of Seattle. The novel expands the 2159 sci-fi series and sets up the trilogy’s final book, expected in 2027.

Why it matters: - Horizon Fault continues a trilogy built around a future shaped by predictive quantum artificial intelligence, megacities and corporate power. - The book pushes the series’ central mystery into Seattle, where the fallout from a catastrophic event could reshape the world of 2159. - The release moves the Transition Age story toward its planned conclusion with The Uncounted, expected in 2027.

What happened: - Tyler Corriveau will release Horizon Fault on Saturday, Oct. 24, 2026. - The book is the second installment in the Transition Age Trilogy. - Horizon Fault will be available in paperback, Kindle eBook and Kindle Unlimited. - The story follows Iris Vale after her escape from a classified underground lab. - The plot sends Iris into the irradiated ruins of Seattle to investigate the Great Horizon Fault.

The details: - The trilogy is set in 2159 in vertical megacities run by predictive quantum artificial intelligence and rival megacorporations. - Book One, Transition Age, was published March 1, 2026. - Transition Age followed Iris Vale’s escape from a classified lab in Chicago. - Horizon Fault picks up directly after the first book and takes Iris deeper into the world of 2159. - The novel centers on a global conspiracy tied to a catastrophic failure known as the Great Horizon Fault. - A surviving mother and son help Iris uncover what the historic disaster may have really been. - The book description says Iris must search Seattle’s ruins for answers in a void of quantum entanglement. - The story also raises questions about the disappearance of children during a dark winter. - Horizon Fault will be sold at Amazon, Bookshop.org and Barnes & Noble. - The paperback ISBN is 979-8-9946284-1-6. - The Kindle eBook ISBN is 979-8-9946284-6-1. - The Transition Age audiobook is available on Audible for readers who want to start with Book One.

Between the lines: - Corriveau frames the series as more than a dystopian chase story, linking its world-building to a trajectory he sees as plausible in the real world. - The Seattle setting suggests the series is widening from an escape narrative into a larger collapse-and-cover-up storyline. - The emphasis on memory, corruption and managed history points to a broader theme: power in this universe depends on controlling what people know.

What’s next: - The Transition Age Trilogy will conclude with The Uncounted, expected in 2027. - Readers can follow the broader series through the official Transition Age Trilogy site. - Corriveau continues promoting the series across LinkedIn, Instagram, TikTok and X.

The bottom line: - Horizon Fault deepens a sci-fi trilogy that blends corporate control, artificial intelligence and environmental ruin into a single escalating mystery.