Oxygen Leaks
HARMONICS: ECHO AND ORIGIN cover image

HARMONICS: ECHO AND ORIGIN

Release Date: Sunday, May 25th, 2025
Pages: 485 pages
In 'HARMONICS: ECHO AND ORIGIN,' the third book in Sam Hodge's series, the cadets of an interspecies Academy navigate memory and resonance amidst the looming threat of recursion, discovering that harmony is both a tool and a battlefield.

Available At

Full Description

Between Echo and Origin is the third and most expansive entry in the Harmonics series—an emotionally charged, lyrically constructed sci-fi epic where memory is not a tether to the past, but a frequency through which the future unfolds.
In the aftermath of Earth’s great harmonic awakening, peace holds—but just barely. The cadets of a new interspecies Academy, built where ocean meets rainforest, have begun to master resonance: not as weapon or technology, but as shared awareness between humans, dolphins, and great apes. Harmony, once a myth, is now a field of study, a tool of survival, and the only thing that can stop the return of recursion—an ancient force that corrupts not just systems, but thought itself.
At the center is Shane, a cadet caught between pain and potential. After losing his harmonic partner to recursion’s unraveling, he is drawn into a vault where time, self, and identity distort. There, the past doesn’t repeat—it erases. And within this fracture, something stirs. Kade, an elder Harmonist once thought lost, now re-emerges not as villain, but as echo: recursive, irredeemable, and hungry for control.