The Bottom Line: A tightly-engineered identity thriller, often realistic in its detail and unexpectedly forceful in its payoff.
A twenty-six-year-old woman wakes in an Austin hospital with a concussion, a fractured ankle and a troubling blank space where recent memory should be. She gives the name “Jaime” to the attending physician, even as the name “Sam” lingers in her mind with quiet insistence. She cannot explain why she resists police involvement or why the suggestion of having her photograph taken triggers immediate alarm. What she does know is that exposure feels dangerous.
Author KA Biggerstaff deftly builds the tension in Operation: Running Brook around identity reconstruction, as Sam begins following a series of practical assets she had previously positioned: a gym locker secured by biometric lock, a lockbox containing cash and a key, a storage unit holding vehicles and firearms. These are not clues left in anticipation of memory loss, but elements of a life already operating under layers of discretion. Each discovery deepens the mystery rather than clarifying it.
Biggerstaff, a former U.S. Air Force veteran who served primarily overseas in Europe and deployed to Saudi Arabia in support of Operation Desert Storm, brings lived-in authenticity to the military detail and operational logic. The tradecraft feels practiced rather than theatrical. Sam handles weapons with familiarity, thinks in terms of exits and surveillance, and instinctively scans for threats. She sweeps vehicles for tracking devices, evaluates body language, and quietly tests her own firearms proficiency to confirm that the competence she senses is real. When that proficiency proves undeniable, the gap between who she feels like and who she was narrows. The dissonance between skill and memory becomes the book’s central engine.
The turning point comes when Sam locates her apartment and finds a military identification card revealing she is Captain Samantha E. Barrett, a U.S. Air Force officer. The revelation does not restore her memory, but, thrillingly, reframes her instincts. Her reluctance to involve authorities and her methodical risk assessment begin to look less like paranoia and more like conditioning. Soon, intriguing fragments of a classified assignment surface: Sam was operating undercover, tasked with protecting a civilian while infiltrating a powerful defense contractor amid concerns about compromised military equipment. There are echoes here of a Bourne-style identity thriller (a highly trained operative cut loose from her past), but Biggerstaff’s approach is far more procedural and earned than frenetic.
An additional layer emerges through Sam’s tentative romantic connection with a sharp-edged CIA officer whose own secrets complicate the mission. That relationship introduces vulnerability at precisely the moment Sam is relearning how to trust her own mind.
For global mystery and thriller readers, Operation: Running Brook offers a disciplined, capable heroine navigating the unnerving gap between instinct and memory. It is a character-driven espionage thriller in which identity is rebuilt through action, and where the truth waiting at the end carries weight far beyond the accident that began it.
