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Catacombs
Beneath occupied Paris, the war is being fought in the dark.
February 1941: While German banners fly above the boulevards, a hidden world spreads beneath the city. The abandoned quarries and tunnels below Paris have been sealed, fortified, and repurposed into something far more sinister.
Prisoners are taken underground and never seen again. Trains vanish from official records. And British Intelligence believes a new German operation is being run from the shadows.
When a key contact disappears inside the Montparnasse quarries, Michael Fernsby and Unit 317 are sent into France with one uncover what the Germans are hiding below Paris and extract the truth before it is buried forever.
Paris is a city under strain. Gestapo patrols tighten their grip, resistance networks are fracturing under pressure, and betrayal lurks behind every closed door. Operating blind and cut off from support, Fernsby is drawn deeper into a subterranean maze where the enemy controls the light, the exits, and the rules.
Meanwhile, Mina Postner’s silence has not gone unnoticed. As the Gestapo closes in on the resistance, the cost of survival grows steeper, and the past threatens to collide with the present in ways neither side can control.
From interrogation chambers carved into limestone to vanished freight records and sealed tunnel networks, Catacombs is a tense, atmospheric descent into the hidden war beneath occupied Europe, where truth is extracted in darkness and survival depends on how much a man is willing to lose.
Catacombs is the next gripping instalment in the Fernsby’s War series, perfect for readers of Alan Furst, Ken Follett, and readers who crave intelligent, historically grounded wartime thrillers.
February 1941: While German banners fly above the boulevards, a hidden world spreads beneath the city. The abandoned quarries and tunnels below Paris have been sealed, fortified, and repurposed into something far more sinister.
Prisoners are taken underground and never seen again. Trains vanish from official records. And British Intelligence believes a new German operation is being run from the shadows.
When a key contact disappears inside the Montparnasse quarries, Michael Fernsby and Unit 317 are sent into France with one uncover what the Germans are hiding below Paris and extract the truth before it is buried forever.
Paris is a city under strain. Gestapo patrols tighten their grip, resistance networks are fracturing under pressure, and betrayal lurks behind every closed door. Operating blind and cut off from support, Fernsby is drawn deeper into a subterranean maze where the enemy controls the light, the exits, and the rules.
Meanwhile, Mina Postner’s silence has not gone unnoticed. As the Gestapo closes in on the resistance, the cost of survival grows steeper, and the past threatens to collide with the present in ways neither side can control.
From interrogation chambers carved into limestone to vanished freight records and sealed tunnel networks, Catacombs is a tense, atmospheric descent into the hidden war beneath occupied Europe, where truth is extracted in darkness and survival depends on how much a man is willing to lose.
Catacombs is the next gripping instalment in the Fernsby’s War series, perfect for readers of Alan Furst, Ken Follett, and readers who crave intelligent, historically grounded wartime thrillers.
- GenresHistorical Fiction
434 pages, Kindle Edition
Published March 30, 2026
About the author
J.C. Jarvis
21 books32 followersJ.C. Jarvis grew up in Derbyshire, England, with a lifelong fascination for history, particularly the Second World War and Tudor England.
After serving in the British Army and later working in the IT industry, he turned fully to writing, transforming a lifelong passion for history into a career as a bestselling historical fiction author.
He is best known for the Fernsby’s War Series, a sweeping World War II saga following British intelligence officer Michael Fernsby and those drawn into the hidden war of espionage, resistance, and sacrifice behind enemy lines.
The series has built a loyal international readership and is praised for its depth of research, emotional realism, and cinematic storytelling.
In addition to Fernsby’s War, Jarvis is the author of the John Howard Tudor series and the origin novel Defying the Reich, which tells the powerful early story of fan-favourite resistance heroine Mina Postner.
When not writing, J.C. continues to research obsessively, always chasing the next story buried in history’s shadows.
After serving in the British Army and later working in the IT industry, he turned fully to writing, transforming a lifelong passion for history into a career as a bestselling historical fiction author.
He is best known for the Fernsby’s War Series, a sweeping World War II saga following British intelligence officer Michael Fernsby and those drawn into the hidden war of espionage, resistance, and sacrifice behind enemy lines.
The series has built a loyal international readership and is praised for its depth of research, emotional realism, and cinematic storytelling.
In addition to Fernsby’s War, Jarvis is the author of the John Howard Tudor series and the origin novel Defying the Reich, which tells the powerful early story of fan-favourite resistance heroine Mina Postner.
When not writing, J.C. continues to research obsessively, always chasing the next story buried in history’s shadows.
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Displaying 1 - 12 of 12 reviews
April 17, 2026
Along with the other books by J. C. Jarvis, Catacombs starts out with a bang. As agents and members of the underground are simply “vanishing” in Paris, British agent, Michael Fernsby, is tasked with finding out what the Nazis have done with individual citizens and resistance cells. In the meantime, Mina, his girlfriend, is staying just one step ahead of the Gestapo, which has arrested a large number of her friends and other people in the French resistance group. All in all, even from the safety of sitting in my armchair with soft Celtic music playing beside me…I often found myself at the edge of my seat with this novel.
Although I have enjoyed each of the nine books in this WWII series, I was a little leery after reading the various complaints from readers concerning how Catacombs ends. Worse yet, even the author put out a “semi-apology” for the ending, and assured readers that everything would work out ok for the protagonists of the novel. Fortunately-or-unfortunately, Jarvis is such a great writer that one cannot help but feel a close bond to his central characters; all, of whom, are living in a very dangerous time and place.
Despite the warnings in other reviews, I felt that conclusion of the novel offered a clear path for more books in the series. Unlike the clueless and amiable Nazis depicted in the old TV show, Hogan’s Heroes, Jarvis’s villains are cruel, methodical, and relentless members of the Gestapo. Indeed, the notorious Heinrich Himmler and Reinhard Heydrich can be seen passing through the pages of this series. As the book ended in May 1941, I’m looking forward to the eventual arrival of the Americans into the war. Overall, this is a wonderful series that would have made the late Philip Kerr (who wrote the Berlin noir series) proud.
Although I have enjoyed each of the nine books in this WWII series, I was a little leery after reading the various complaints from readers concerning how Catacombs ends. Worse yet, even the author put out a “semi-apology” for the ending, and assured readers that everything would work out ok for the protagonists of the novel. Fortunately-or-unfortunately, Jarvis is such a great writer that one cannot help but feel a close bond to his central characters; all, of whom, are living in a very dangerous time and place.
Despite the warnings in other reviews, I felt that conclusion of the novel offered a clear path for more books in the series. Unlike the clueless and amiable Nazis depicted in the old TV show, Hogan’s Heroes, Jarvis’s villains are cruel, methodical, and relentless members of the Gestapo. Indeed, the notorious Heinrich Himmler and Reinhard Heydrich can be seen passing through the pages of this series. As the book ended in May 1941, I’m looking forward to the eventual arrival of the Americans into the war. Overall, this is a wonderful series that would have made the late Philip Kerr (who wrote the Berlin noir series) proud.
April 1, 2026
Another mission for Micheal as he is sent to France to find one of his team Paul and try to discover what is going on underground that the Germans are doing .
He meets Mimi and with her friends to discover what is going on and things go wrong and just manage to escape with there lives ,with some losses .
Michael and Paul have to stay to finish there mission ,so have to wait for the next book .
Very good read as the Germans are hiding something and don't want it discovered .
And all is not as it should be at home base .
He meets Mimi and with her friends to discover what is going on and things go wrong and just manage to escape with there lives ,with some losses .
Michael and Paul have to stay to finish there mission ,so have to wait for the next book .
Very good read as the Germans are hiding something and don't want it discovered .
And all is not as it should be at home base .
April 8, 2026
Great Read
The whole Fernsby Series was edge of your seat spellbinding! Every book was just as good as the next! I loved every one & Catacombs delivered, as well! Hate to see it all end!
The whole Fernsby Series was edge of your seat spellbinding! Every book was just as good as the next! I loved every one & Catacombs delivered, as well! Hate to see it all end!
April 15, 2026
Breathtakingly good
So thrilling. You felt as if you were part of the group. Exciting and real scary to terrifying. So didn't want the book to end.
Willing the next book to come soon.
So thrilling. You felt as if you were part of the group. Exciting and real scary to terrifying. So didn't want the book to end.
Willing the next book to come soon.
June 4, 2026
Wonderful
I throughly enjoyed reading Fernsby’ War books. I had to keep reading book after book. I hope you are working on Book 9! You are an amazing writer! I love historical fiction and you have done an exceptional job! Thank you!
I throughly enjoyed reading Fernsby’ War books. I had to keep reading book after book. I hope you are working on Book 9! You are an amazing writer! I love historical fiction and you have done an exceptional job! Thank you!
April 1, 2026
ending
I loved the whole series. The end of book 8 left a whole lot to be desired The ending did not end the story
I loved the whole series. The end of book 8 left a whole lot to be desired The ending did not end the story
April 8, 2026
Loved catching up with Fernbsy and group. As always, exciting. Hated the ending, hope there is one more book to complete the series.
April 13, 2026
A really fantastic read can’t wait for the me book left me up in the air when is book 9 a really great read and fantastic series keeps me on my toes and needing more thank you so much
April 20, 2026
Outstanding
Magnificent. I enjoy reading about the exploits of Michael.
The book keeps the reader in suspenseful.
Continue the good work.
Magnificent. I enjoy reading about the exploits of Michael.
The book keeps the reader in suspenseful.
Continue the good work.
April 30, 2026
Not as good a read as the others in the series. Whole basis of the book seems far fetched and unbelievable. Really could not get into this one.
May 9, 2026
Thrilling! Couldn’t put it down!
A must read! I am so glad Michael and Mina’s story continues. I don’t want it to end - these characters come alive and keep you wanting more!
A must read! I am so glad Michael and Mina’s story continues. I don’t want it to end - these characters come alive and keep you wanting more!
May 22, 2026
Another excellent book from the Fernsby war series.
Displaying 1 - 12 of 12 reviews