Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | The Thin Black Line | 2015 | Mike Walton | Buy |
| 2 | A Long Gray Line (Short Story) | 2016 | Mike Walton | Buy |
| 3 | A Red Dotted Line | 2016 | Mike Walton | Buy |
| 4 | A Thick Crimson Line | 2018 | Mike Walton | Buy |
The Mike Walton Thriller series consists of four entries published between 2015 and 2018. The series follows covert operative Mike Walton through espionage missions, with each book identified by a color-themed title: The Thin Black Line, A Long Gray Line, A Red Dotted Line, and A Thick Crimson Line.
The second entry, A Long Gray Line, is a short story rather than a full novel, making the series three novels and one short story. The books are action-driven espionage thrillers with a fast pace.