I tried Matheson as I found out he wrote some of the stories that later would be showed on the twilight zone, which I enjoyed as being a kiddo.
Even enjoying a few stories, most of them are today too much old fashioned. The good thing is that the author writes really well and most of the stories keep a suspense in high degree throughout the development. Some stories are better than others but imho, anyone a great one.
You can easily find some of the short stories in film support on the internet.