I find the term 'non-stop' tricky because it depends on what you consider a thrill. A lot of the big, popular series everyone recommends, like Clive Cussler's Dirk Pitt books, honestly feel a bit formulaic to me now. The pacing is relentless, sure, but after a while the constant explosions and escapes start to blur together without any breathing room for the characters, which makes me care less about the outcome.
Lately, I've gotten more out of books that weave the action into a genuinely intriguing mystery or a deeply flawed protagonist. Steve Berry's Cotton Malone series is a solid example—the chases and fights are there, but they're driven by historical puzzles that actually make me want to turn the page to solve them, not just see the next punch thrown. That kind of intellectual momentum can feel just as thrilling as a car chase.
For pure, unadulterated velocity, though, you can't really beat Matthew Reilly. 'Ice Station' is basically a blueprint for this question. It starts with a premise and then just… never stops. It’s like reading a summer blockbuster that’s all third act. Sometimes that's exactly what I'm in the mood for, even if I can't remember a single character's name a week later.