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Review: The Regression Strain by Kevin Hwang

Synopsis:

Nobody’s safe when the inner beast awakens…

Dr. Peter Palma joins the medical team of the Paradise to treat passengers for minor ailments as the cruise ship sails across the Atlantic. But he soon discovers that something foul is festering under the veneer of leisure. Deep in the bowels of the ship, a vile affliction pits loved ones against each other and shatters the bonds of civil society. The brig fills with felons, the morgue with bodies, and the vacation becomes a nightmare.

One by one, the chaos claims Peter’s allies. His mentor spirals into madness and the security chief fights a losing battle against anarchy. No help comes from the captain, who has an ego bigger than the ocean.

With the ship racing toward an unprepared New York, the fate of humanity hinges on Peter’s deteriorating judgment. But he’s hallucinating and delirious…and sometimes primal urges are impossible to resist.

The Regression Strain is a fast-paced medical thriller laced with psychological suspense, perfect for fans of Michael Crichton and Blake Crouch.

Favorite Lines:

“Right back into it, then. He was a kid on a roller coaster cresting the first big incline—the moment before the bottom fell out. He opened the closet and confronted his uniform. Sure, he’d paid for the ride, but that didn’t make it any less stomach-churning.”

“Funny how standards eroded in the face of devastation.”

“The holes in his memory were filling in like groundwater welling up in the paw prints of a rabid raccoon. Muddy and random.”

My Opinion:

I received a copy of this book from the author in exchange for my honest opinion.

What starts as a slow simmer quickly boils over in The Regression Strain, Kevin Hwang’s debut that’s equal parts medical mystery, psychological spiral, and pandemic-era existential horror. It’s not a long book, but it’s the kind that lingers—creeping into your thoughts days after you’ve closed it.

The story follows Dr. Peter Palma caught in the chaos of a rapidly spreading fungal pandemic. But Hwang doesn’t just want to tell a virus-outbreak story. He wants to pick at your nerves. The plot slips between sanity, and reality in a way that’s deliberately disorienting. Think fever dream with a med school vocabulary. And I mean that as a compliment.

What makes this novel hum is the way Hwang blends scientific precision with narrative messiness. There’s an almost surgical attention to detail in the clinical scenes—no surprise, given Hwang’s background in medicine—but it never feels like a lecture. Instead, the book immerses you in the  high-stakes environment of a cruise ship in the midst of a mysterious illness, only to pull the rug out with unsettling shifts in tone and perception. At times, I questioned whether what I was reading was happening at all—much like the narrator himself. It’s a risky move, but it works.

Stylistically, it won’t be for everyone. The prose can be clipped and clinical one moment, then rush into sensory overload the next. It’s intentional and immersive, but it can make for a slightly uneven reading experience. That said, if you’re the kind of reader who doesn’t mind being dropped into the deep end—without floaties—there’s a lot to appreciate here.

Emotionally, The Regression Strain taps into something very now. The anxiety of being overeducated but powerless. The loneliness of a pandemic. The slow erosion of certainty. It’s not a comforting read, but it’s a relatable one, especially if you’ve ever tried to logic your way through a crisis and come out the other side more confused than when you started.

Summary:

Overall, is it horror? Sci-fi? Psychological drama? Honestly, it’s all of the above and then some. Hwang doesn’t seem interested in coloring within genre lines, and that’s part of the fun. The Regression Strain is sharp, strange, and surprisingly affecting. It’s not your typical outbreak story—It’s weirder (in a good way), smarter, and a bit sadder.

Can we also take a minute to acknowledge that Hwang is a whole father and doctor and still somehow found time to write this masterpiece, I am in awe! If you like horror, suspense, action, medical mysteries, sci-fi, and/or thrillers then this book could be for you. Happy reading!

Check out The Regression Strain here!

 

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