Some of his most famous works include:
* The Odd Thomas series (Odd Thomas, Forever Odd, etc.)
* The Frankenstein series (The Frankenstein Chronicles, The Frankenstein Legacy, etc.)
* The Watchers series (Watchers, Whispers, etc.)
* The Eyes of Darkness
* Lightning
* Intensity
* The Bad Place
* The Taking
Other notable works by Dean Koontz:
* The Voice of the Night
* One Door Away from Heaven
* The Husband
* Cold Fire
* Dark Rivers of the Heart
* Seize the Night
* The Beach House
* The Silent Corner
This is just a small selection of Dean Koontz's vast body of work. He has written books in a variety of genres, including horror, thriller, science fiction, and suspense. His work is known for its suspenseful plots, intriguing characters, and supernatural elements.