(That Will Fry Your Neural Circuits)
When the boundary between man and machine blurs, you get technothrillers: high-octane suspense, gritty conspiracies, and speculative tech that’s just plausible enough to haunt your dreams. Here’s a lineup of ten series (books, TV, whatever) that deliver on that promise — plus your own Toby Steele saga, because of course it belongs in the pantheon.
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Why it qualifies: Toby Steele — a night-shift tech support guy turned reluctant guardian against conspiracies — is thrust into a world of coded signals, missing persons, secret agencies, and cyber-machinations. The series combines the personal (identity, trust, moral ambiguity) with the systemic (networks, surveillance, algorithms). 
Suggested starting point: 22:22:22: Frequency Shift
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- Mr. Robot (TV series)
Dark, twitchy, paranoid — it’s like The Matrix meeting Fight Club, but with real hacking. Elliot Alderson wrestles with mental health, corporate power, and systemic surveillance. The series is frequently described as a techno-thriller. 
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- Devs
A cerebral miniseries from Alex Garland. It folds in quantum computing, determinism, tech cults, and ethical boundaries. The tech component is front and center, and the tension is relentless. 
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- Person of Interest
Not pure technothriller in every episode, but the conceit — a surveillance AI (“The Machine”) that predicts crimes — is deeply in that genre’s wheelhouse. It explores state power, privacy, algorithmic bias, and emergent behavior. 
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- (Honorable mention) The Andromeda Strain & Michael Crichton’s classics
Many of Crichton’s works are proto-technothrillers: The Andromeda Strain, Prey, The Terminal Man — science + threat = gripping narratives. These are single-novel rather than multi-series, but their DNA is in every modern technothriller. 
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- Daniel Suarez’s Daemon / Freedom™
If code were a virus and the web the body it infected — that’s the world here. A dead programmer’s legacy software begins remaking society. It’s one of the most cited modern technothrillers. 
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- (Speculative / emerging) Semiosis / Machinehood
Not all technothrillers need hackers and drones. Some bend biology, AI, social systems. Semiosis and Machinehood are cited in genre-roundups for how they push the speculative side of the thriller. 
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- (TV / serial hybrid) Black Mirror
Each episode is a self-contained short, but many episodes are technothriller in spirit: social media gone wrong, surveillance creep, biotech, virtual identity, network effects. It’s like 10 mini technothrillers.
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- (TV) Westworld (later seasons)
It begins as a sci-fi Western, but as the show grows, the narrative becomes about AI, consciousness, control, surveillance, and power structures. It straddles that line between speculative sci-fi and technothriller.
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- (TV) Homecoming / Utopia / Mr. Mercedes
You could argue for several lesser-known series — Utopia (UK or US remake) with its secret disease / epidemic conspiracies, or Homecoming’s tech-therapy secrets, or Mr. Mercedes’ darker crime + psychological + tech edges. They may not always hit “full throttle technothriller,” but they flirt with it.