The Recommended Reading Order
To fully experience Mike and Lisa Walton's high-stakes adventures, we recommend reading the books in chronological order. Because the narrative relies heavily on character development, relationship milestones, and escalating global stakes, skipping around isn't ideal. Fortunately, the publication order aligns perfectly with the timeline of events.
- The Thin Black Line (2015)
- A Long Gray Line (2016) — Novella
- A Red Dotted Line (2016)
- A Thick Crimson Line (2018)
Understanding the World of Mike Walton
Written by ex-federal agent Simon Gervais, this series is prized for its intense realism and deep understanding of counter-terrorism tradecraft. Unlike lone-wolf spy sagas, this series centers on a husband-and-wife duo—Mike and Lisa Walton—who are both highly trained field operatives. After a personal tragedy shatters their lives, they join the International Market Stabilization Institute (IMSI), a privately funded organization operating outside government red tape to protect North American economic interests.
The Books in Detail
1. The Thin Black Line (2015)
This is where the story begins. Mike Walton, a former police officer and seasoned counter-terrorism operative, is targeted by a ruthless terrorist organization. The attack leaves him severely injured and his family devastated. Needing a way to strike back without being bound by official bureaucracy, Mike and his wife Lisa are recruited by the International Market Stabilization Institute (IMSI). Their first mission pits them against Sheik Al-Assad, a brilliant extremist plotting a catastrophic strike against North America.
2. A Long Gray Line (2016)
This digital novella bridges the gap between the first and second novels. In A Long Gray Line, the Walton duo faces a dual crisis: a threat to sabotage the US stock market and unresolved threats lingering from their previous mission. Although it is a shorter read, it offers crucial character development and sets up the tension for the next full-length book.
3. A Red Dotted Line (2016)
The action intensifies as Mike and Lisa travel to Moscow. When their covers are blown, they find themselves caught in a deadly web of espionage, facing a Russian mastermind who is always one step ahead. With their lives on the line, the couple is pushed to their absolute limits in a race to prevent a major geopolitical conflict.
4. A Thick Crimson Line (2018)
Serving as the final book in the series, A Thick Crimson Line wraps up the major storylines. Mike Walton must track down a network of sleeper cells and stop a ticking-clock crisis in the Middle East. It brings the couple's relationship and their career with IMSI to a thrilling, explosive conclusion.
What to Know Before You Start
Here are a few practical tips to help you get the most out of the Mike Walton series:
- Start at the beginning: Because of the emotional weight carried from book to book, starting with The Thin Black Line is essential. The relationship between Mike and Lisa, as well as their recovery from physical and emotional trauma, forms the backbone of the series.
- Don't skip the novella: While novellas in some thriller series are optional side stories, A Long Gray Line contains important character progression and connects directly to the events of A Red Dotted Line.
- Real-world influence: Author Simon Gervais served as a counter-terrorism officer in the Royal Canadian Mounted Police (RCMP). This background heavily influences the tactics, technology, and organizational dynamics depicted in the books, giving it a gritty authenticity reminiscent of Vince Flynn or Brad Thor.
- Are there crossovers? Although Simon Gervais has written other popular thrillers (such as the Pierce Hunt and Clayton White series), they exist in their own separate universes. You do not need to read any of his other works to enjoy or understand the Mike Walton books.