Dean Koontz’s books on Jane Hawk and Lee Child’s books on Jack Reacher are examples of suspense thrillers that have done well as a series. Many of these are included in the regular review section.
I have gotten to know the Jack Reacher character and look forward to the next book. I was a little disappointed to find that Jane Hawk had not really let us know if her little boy was ok at the end of The Crooked Staircase. It does bother me that Jack Reacher seems to really care for some of the women he gets close to and then he just leaves, or they do.
I still see Stephen King and the real master of suspense thrillers, horror, fantasy, science fiction, and mystery. He does well without having the characters as part of a series.