One of the joys of reading is the long-running book series. One-off stories are well and good but there is great joy in reading a multiple book series featuring the same cast of characters and watching them grow and deal with increasingly severe situations. Serialized fiction is not for everyone but if it is your jam, there are few literary joys equivalent to a good series.

One long running series is the Jonathan Grave series of books by John Gilstrap. Twelve books and counting, it is the sort of thing that can excite an appreciator of serial fiction. I conducted an interview with the author of the book so he can talk about his latest offering.

This interview has been lightly edited for formatting and presentation purposes.

Hi, John! Thanks for taking time to talk to us today. Could you please introduce yourself to our readers?

My name is John Gilstrap. I am a lifelong resident of Northern Virginia, as is my bride of 36 years. Since 1995, I have penned 21 thrillers and one nonfiction book. My passion has always been writing. In fact, I am one of precious few people I know who, in my sixth decade on the planet, is doing exactly what I would have told you I wanted to do when I was a teenager.

Hellfire is the latest novel in your long-running Jonathan Grave series of books. Please tell us a bit about this series and its protagonist.

Long-running indeed! Hellfire is the 12th entry in the series. I never dreamed that the series would have that kind of legs. What an honor!

Jonathan Grave and his team are freelance hostage rescue specialists. As a team, they often work outside of the law, but never on the wrong side of it. When the police run a hostage rescue operation, their primary objective is to make sure that the bad guys go to jail. When Security Solutions, Jonathan's team, run a rescue, their sole focus is to save the good guys. What happens to the bad guys is not their concern.

Uncle Sam is aware of what the team is capable of, and it is not uncommon for the director of the FBI to engage them to do things that governments simply cannot do.

I don't think of the Grave books as a series, though. They are standalone thrillers with recurring characters. I work hard to make sure that each book can stand on its own without confusing readers, while including treats for the benefit of fans who have come along for the whole ride.

To me, one of the interesting things about this novel is the cast of characters at Grave's company Security Solutions and his contact at the FBI. Please tell me about them and how they have evolved as the series has progressed.

Thank you. Jonathan does not suffer fools. He surrounds himself with a team that is extraordinarily competent, and they are 100% committed to each other. Of the three main operators, Jonathan and Boxers are former Delta Force operators, and Gail Bonneville was part of the FBI's Hostage Rescue Team (HRT). The fourth member of the team, Venice Alexander, is a world-class hacker who can work wonders in cyberspace.

Jonathan has a special relationship with Irene Rivers, director of the FBI. Back in the day, when Irene was still a special agent for the FBI and Jonathan was still in the Army, Jonathan and Boxers broke more than a few laws to save Irene's young daughters from a predator. That's their special secret and their special bond. After Irene was named FBI director, that bond took on special importance.

Jonathan's team is the only family he has.

A lot of thriller books in this genre seem dominated by former military or law enforcement writers. But I learned in preparing the review for another of your books, Nathan's Run, your background was as a firefighter and safety engineer. How has that informed your writing style?

Beginning when I was 23 years old, I entered the worst moments of strangers' lives and brought order to chaos. Over the next fifteen years, over thousands of emergency responses, I delivered two babies and counseled countless grieving spouses, parents and children. I was burned, shot at, and threatened with one very large knife. Along the way, I saved far more lives than I lost and formed deep bonds with some fine public servants. And I did all of that without being paid a dime. Those experiences affect everything that I think and do. How can it not?

Professionally, my safety engineering dealt mainly with explosives and other hazardous materials. I conducted well over 1,000 accident investigations, from minor cuts to fatalities; from small fires to major explosions.

I don't know exactly how that all informs my writing style, but I figure it must. Again, how could it not?

I was interested to learn that your one non-fiction book was about the rescue of Kurt Muse during the Panamanian Invasion. Did the people you meet researching that book help build your portrayal of Jonathan Grave?

The people I met doing the research for Six Minutes to Freedom serve as the models for both Jonathan and Boxers. The men and women of the American Special Forces are a breed unlike any other. They are dedicated not just to God and country, but also to each other and to their mission. Those are all traits and principles that drive Jonathan Grave and his team.

As with any long running series, one often wonders 'What next?' What is next for Grave and his company of Hostage Rescue professionals?

The 13th entry in the Grave series will be Stealth Attack. It is still too deeply in the development phase to describe it.

After the end of this book, there was a sample chapter for a new series you are writing called Crimson Phoenix. Could you take a moment to tell us about it?

The Crimson Phoenix series takes my work in an entirely new direction. In it, World War III lasts about eight hours, and when it is done, the United States is left in ruins. With all the infrastructure gone, and elected leaders unable to communicate with people outside of the bunkers that protected official Washington, it falls to individual citizens to figure out a way to continue living. It doesn't take long for the weak to turn feral. In one corner of West Virginia, though, a single mom named Victoria Emerson turns out to be the leader that everyone's been looking for.

Thank you for taking the time to speak with us today!

It's been a real pleasure.