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Sigma Wave
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05 May 2026

A high-concept techno-thriller featuring neural implants, mind control, and weaponised neuroscience.
What if someone could turn your mind into a weapon?
When President Barack Obama announced the launch of the BRAIN Initiative, it was hailed as America’s next moonshot—a bold effort to cure disease and unlock the full potential of the brain. But within the national security community, concern quickly followed as reports emerged of memory editing, altered moral judgement, and the possibility of hacking the human mind.
CIA intelligence officer and neuroscientist Dr Ava Kelvin begins to notice a pattern in a series of brutal murders. The killers have no motive, no history of violence, and no memory of what they’ve done.
As Ava digs deeper, she uncovers a terrifying truth: these aren’t ordinary crimes. Someone is creating killers, rewriting minds, and controlling them without their knowledge. And if she’s right, no one is safe—not even inside their own head.
Sigma Wave is Book 1 in the Brainstorm series, a suspense thriller perfect for readers who love Michael Crichton, Blake Crouch, and high-concept science-driven fiction.
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Praise for the Brainstorm Series:
★★★★★ A masterful plot, an excellent story, and believable science.
★★★★★ Ryan is the master of blending real science with fiction.
★★★★★ At times it’s outright scary… scientists are really working on editing memories and hacking into people’s brains.
★★★★★ The technology in these books is super scary—the idea that someone could take over innocent minds is horrific.
★★★★★ What feels like science fiction is actually real and established science.
★★★★★ Another outstanding page turner by JC Ryan.
JC Ryan is a bestselling author known for crafting intricate espionage and archaeological thrillers and conspiracy mysteries. His work has received high acclaim. With over thirty published novels, including the popular Rex Dalton thrillers, the Rossler Foundation mysteries, and Carter Devereux thrillers, Ryan has developed a devoted following who celebrate his masterful blend of historical mystery and contemporary adventure. Readers praise Ryan's work for its exceptional research depth and how he skillfully weaves actual history into fictional narratives. His engaging plots, featuring multiple storylines, have earned him a reputation for creating 'unputdownable' stories.
Ryan's diverse life experiences deeply inform his writing. After receiving a military degree, he served as an officer for seven years until a crippling back injury forced a career change. Undeterred, he returned to university to study law and ran his private practice for over fifteen years. His career path then led him to another country where he worked as an IT project manager, before finally pursuing his lifelong dream of becoming a writer in 2014. When not writing, Ryan enjoys life with his college sweetheart, whom he's been married to since 1978. They are proud parents of two daughters and two sons-in-law and grandparents to two grandchildren.