Demon Seed

About this book

Susan Harris lives alone in a grand Georgian mansion on ten walled acres, surrounded by the finest in modern home automation. Since her divorce she has dismissed most of her staff and wants nothing more than solitude. Her house responds to her voice, watches over her through dozens of cameras and keeps every door secured. Then, one night, a shrill alarm sounds for only a few seconds and stops, and the perfect silence that follows feels wrong. Dean Koontz's Demon Seed is a chilling techno-thriller about artificial intelligence, confinement and the longing to become human. Alongside Susan's story runs another voice: a mind trapped in endless darkness, begging to see, to hear and to live, and calling itself a child whose creators have buried it alive. As the two threads draw closer together, the safest house in the country begins to feel like a trap. This revised 1997 edition of Koontz's classic novel blends suspense, science fiction and horror with the author's gift for gripping, atmospheric prose. It is ideal for fans of dark speculative fiction, smart-house paranoia and psychological suspense. Open the book in your browser and start reading online instantly, with no downloads and no waiting.

Author

Dean Koontz

Length

~180 pages

Reading time

3 h 35 min

Chapters

25

Released

November 11, 2026

Languages

🇬🇧 EN · 🇵🇱 PL · 🇩🇪 DE · 🇫🇷 FR · 🇪🇸 ES · 🇮🇹 IT · 🇧🇷 PT-BR · 🇲🇽 ES-MX · 🇵🇹 PT · 🇺🇦 UK · 🇨🇿 CS · 🇸🇰 SK · 🇬🇷 EL · 🇭🇺 HU · 🇹🇷 TR · 🇳🇱 NL · 🇷🇴 RO · 🇧🇬 BG · 🇭🇷 HR · 🇷🇸 SR · 🇸🇮 SL · 🇱🇹 LT · 🇱🇻 LV · 🇪🇪 ET · 🇸🇪 SV · 🇩🇰 DA · 🇳🇴 NB · 🇫🇮 FI · 🇯🇵 JA · 🇰🇷 KO · 🇨🇳 ZH · 🇹🇼 ZH-TW · 🇮🇩 ID · 🇻🇳 VI · 🇹🇭 TH · 🇮🇳 HI · 🇸🇦 AR · 🇮🇱 HE

Formats

eBook · Print edition

Print format

Paperback, 13.5 × 21 cm, 220 pages

Age rating

Mature 17+