Read a lot of Koontz's works to understand his style and story structures. Also, focus on creating engaging characters and plots with unexpected twists.
To write like Dean Koontz, you need to master the art of creating tension and emotional connections with readers. Analyze his character development and try to incorporate similar elements. And don't forget to polish your prose for a smooth reading experience.
First, study Koontz's ability to build suspense and keep readers hooked. Then, work on developing your own unique voice and themes. Pay attention to pacing and world-building too.