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Shadow Access: A Sentinel Mutual Thriller
Kayla thought she was uncovering routine fraud. Instead, she found a shadow network manipulating millions in insurance claims and burying the evidence inside shell companies.
Now she’s a liability.
As she follows the money deeper into Sentinel Mutual’s executive ranks, the conspiracy tightens. Board members close ranks. Records disappear. Threats become personal. And when the newly appointed CEO, Evan, is pulled into the crossfire, Kayla realizes the corruption doesn’t stop at financial ruin. It destroys reputations, careers, and anyone who gets too close.
With her name leveraged against Evan and powerful insiders determined to protect their empire, Kayla must decide how far she’s willing to go. Every move exposes another layer of deception. Every mistake could cost more than her job.
In a world where trust is weaponized and loyalty is currency, exposing the truth may be the most dangerous play of all.
Shadow Access is a high-stakes corporate thriller packed with financial intrigue, boardroom power plays, and a heroine willing to risk everything to bring down a corrupt system from the inside.
Now she’s a liability.
As she follows the money deeper into Sentinel Mutual’s executive ranks, the conspiracy tightens. Board members close ranks. Records disappear. Threats become personal. And when the newly appointed CEO, Evan, is pulled into the crossfire, Kayla realizes the corruption doesn’t stop at financial ruin. It destroys reputations, careers, and anyone who gets too close.
With her name leveraged against Evan and powerful insiders determined to protect their empire, Kayla must decide how far she’s willing to go. Every move exposes another layer of deception. Every mistake could cost more than her job.
In a world where trust is weaponized and loyalty is currency, exposing the truth may be the most dangerous play of all.
Shadow Access is a high-stakes corporate thriller packed with financial intrigue, boardroom power plays, and a heroine willing to risk everything to bring down a corrupt system from the inside.
272 pages, Kindle Edition
Published November 29, 2025
About the author
Becky Mathisen
7 books1 followerBecky Mathisen is an Information Security Manager and a Health and Life Coach who somehow balances corporate life, motherhood, and late-night hacking challenges with writing thrillers and romantic fiction.
She lives in Iowa with her husband, two cats, one dog, and a teenager who keeps her on her toes.
Becky loves a good plot twist, a strong cup of coffee, and any snack with ingredients she can actually pronounce. Shadow Access marks the start of her publishing journey.
You can connect with Becky on:
Official Website: beckymathisen.com. Join my mailing list for exclusive content and news on latest releases.
Substack: https://beckymathisenwrites.substack....
Instagram: @beckymathisenauthor
She lives in Iowa with her husband, two cats, one dog, and a teenager who keeps her on her toes.
Becky loves a good plot twist, a strong cup of coffee, and any snack with ingredients she can actually pronounce. Shadow Access marks the start of her publishing journey.
You can connect with Becky on:
Official Website: beckymathisen.com. Join my mailing list for exclusive content and news on latest releases.
Substack: https://beckymathisenwrites.substack....
Instagram: @beckymathisenauthor
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Displaying 1 of 1 review
February 25, 2026
Cybersecurity specialist Kayla Morgan investigates what looks like routine insurance fraud at Sentinel Mutual, only to uncover a sprawling shadow network manipulating millions through shell companies and executive corruption.
Written by an actual Information Security Manager, Becky Mathisen's debut techno-thriller brings gritty realism to corporate conspiracy fiction. Kayla's investigation into insurance fraud reveals a deeper corruption network where board members protect their empire, records vanish, and threats become personal. The stakes escalate when newly appointed CEO Evan gets pulled into the crossfire, forcing Kayla into a high-wire act where every move exposes another layer of deception.
Mathisen leverages her cybersecurity background to deliver authentic tech details without drowning readers in jargon. The result feels like Mr. Robot meets corporate boardroom drama: smart, tense, and disturbingly plausible for anyone who's worked in the corporate trenches.
Written by an actual Information Security Manager, Becky Mathisen's debut techno-thriller brings gritty realism to corporate conspiracy fiction. Kayla's investigation into insurance fraud reveals a deeper corruption network where board members protect their empire, records vanish, and threats become personal. The stakes escalate when newly appointed CEO Evan gets pulled into the crossfire, forcing Kayla into a high-wire act where every move exposes another layer of deception.
Mathisen leverages her cybersecurity background to deliver authentic tech details without drowning readers in jargon. The result feels like Mr. Robot meets corporate boardroom drama: smart, tense, and disturbingly plausible for anyone who's worked in the corporate trenches.
Displaying 1 of 1 review