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Degenerate

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Degenerate

By: Matt Casamassina
Narrated by: Phillip Nathaniel Freeman
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About this listen

The latest novel from Matt Casamassina, author of Sophistication, which Kirkus Reviews called "Ambitious. Well-paced. Riveting. [Casamassina] occasionally reaches moments of lyricism.”

Mason Kowalski, a twenty-four year-old copywriter for a San Mateo startup, is on the verge of a nervous breakdown when he inexplicably suffers widespread vision loss in one eye. The doctors say it’s macular degeneration triggered by overwhelming stress, but he wonders if it’s something more, especially when the shadows in his peripheral vision begin to take shape and whisper wonderful and horrible things to him. Is it madness or destiny? The answer could destroy everything and everyone he holds dear.

Journey into the absurd beating heart of Silicon Valley as Mason and his lovable friends try to stop a demented serial killer from murdering more children. Degenerate mashes horror and sci-fi into a twisted, dark, violent and funny pulp drowned in tentacled nightmares. Featuring infamous hijacker DB Cooper and more twists than you can imagine, the genre-breaking story is designed for fans of Stephen King, Blake Crouch, Peter Clines, Keith Rosson, Chuck Wendig and John Scalzi.

©2025 Matt Casamassina (P)2025 Matt Casamassina
Post-Apocalyptic Science Fiction Scary Funny

Critic reviews

“As ambitious as it is unpredictable.” - Kirkus Reviews

“A resolutely unclassifiable epic from Casamassina that blends genres into the wildest of elixirs.” - Publishers Weekly

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I’ve read all of Matt Casamassina’s novels and Degenerate is, without question, his strongest and most ambitious work so far. It’s a genuinely original story with an epic feel, packed with vivid characters, sharp dialogue and a plot that refuses to sit comfortably in any single genre.

What sets this book apart is its insight into the darker, more corrosive side of Silicon Valley–style ambition. Rather than leaping straight into full dystopian sci-fi, the novel lingers in that unsettling space just before everything tips over — and it’s all the more effective for it. The world Casamassina builds feels disturbingly close to our own, which gives the story real weight as it grows stranger and more intense.

There are moments of outrageous humour, sudden turns that completely wrong-foot you, and passages that are surprisingly thoughtful and lyrical. Casamassina takes real risks here, but they pay off, resulting in a novel that’s gripping, unpredictable and often downright insane in the best possible way.

This is a bold, genre-bending thriller that stays with you long after you’ve finished. Hugely enjoyable in print, and the audiobook is equally compelling. Highly recommended.

Casamassina’s best yet — bold, unsettling and brilliantly original

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