What do you think?
Rate this book
When the Light Failed: An Apocalyptic Mystery Thriller
The sun is gone. The stars are gone. And the darkness was only the beginning.
A week into absolute night, the world is still freezing—and there is no sign the sun will ever return.
Deep inside a billionaire's hidden bunker, Marlene Richter searches for the truth behind the end of the world. Far above, a desperate rescue mission races toward the one ship that might hold answers. But aboard the Cassandra's Dream, the thousand brightest minds ever assembled are no longer passengers.
They are prisoners.
Russian special forces have seized the vessel, and their commander is executing a plan far more ruthless than anyone imagined. With time running out and the temperature still falling, the survivors' only weapon is their own intelligence—a thousand experts, in every field, fighting to out-think a man who has planned for everything.
But some plans were never meant to save them.
The light has failed. The truth is worse than the dark.
Joshua T. Calvert is the award-winning, USA Today bestselling author with nearly three million copies sold worldwide in many languages. When the Light Failed is the pulse-pounding second book in The Ark, perfect for fans of SILO by Hugh Howey, Station Eleven, The Leftovers, and Blake Crouch's Dark Matter.
A week into absolute night, the world is still freezing—and there is no sign the sun will ever return.
Deep inside a billionaire's hidden bunker, Marlene Richter searches for the truth behind the end of the world. Far above, a desperate rescue mission races toward the one ship that might hold answers. But aboard the Cassandra's Dream, the thousand brightest minds ever assembled are no longer passengers.
They are prisoners.
Russian special forces have seized the vessel, and their commander is executing a plan far more ruthless than anyone imagined. With time running out and the temperature still falling, the survivors' only weapon is their own intelligence—a thousand experts, in every field, fighting to out-think a man who has planned for everything.
But some plans were never meant to save them.
The light has failed. The truth is worse than the dark.
Joshua T. Calvert is the award-winning, USA Today bestselling author with nearly three million copies sold worldwide in many languages. When the Light Failed is the pulse-pounding second book in The Ark, perfect for fans of SILO by Hugh Howey, Station Eleven, The Leftovers, and Blake Crouch's Dark Matter.
313 pages, Kindle Edition
Published September 14, 2026
About the author
Joshua T. Calvert
56 books297 followersJoshua T. Calvert has traveled the world--on foot, by Jeep, by bicycle, by motorcycle, and lots of other ways besides. As you might imagine, he's seen many things most people never see - including an Iranian prison cell, from the inside! In Kyrgyzstan, he fared slightly better, narrowly avoiding being kidnapped for ransom. Skydiver, scuba diver, martial artist, adventurer - his goal is to experience everything possible, and then make it real to you in his books. And he's made a good run of it so far: in the Philippines, he did police training on multiple types of firearms (despite being no fan of guns himself); dove in Asian waters among sharks and shipwrecks; and patrolled with Sumatran jungle rangers.
That's what defines Calvert's approach to method writing: pushing himself beyond his own limits, to experience first-hand what his characters experience, to make your immersion in his stories as deep as it can be.
For Ganymede Rises, after a slight detour with some smugglers in the deserts of Uzbekistan and the steppes of Mongolia, he traveled by dogsled and snowshoe to the Arctic Circle to experience first-hand what it's like to be utterly isolated in the coldest place on Earth. For his book The Fossil, he sat with professional pilots in flight simulators for Airbus A320 and Boeing 737 aircraft to learn what it's like to fly a passenger jet. His latest adventure: a parabolic flight with European Space Agency astronauts, to experience zero-gravity. All so he can describe it to you, in his own words.
That's what defines Calvert's approach to method writing: pushing himself beyond his own limits, to experience first-hand what his characters experience, to make your immersion in his stories as deep as it can be.
For Ganymede Rises, after a slight detour with some smugglers in the deserts of Uzbekistan and the steppes of Mongolia, he traveled by dogsled and snowshoe to the Arctic Circle to experience first-hand what it's like to be utterly isolated in the coldest place on Earth. For his book The Fossil, he sat with professional pilots in flight simulators for Airbus A320 and Boeing 737 aircraft to learn what it's like to fly a passenger jet. His latest adventure: a parabolic flight with European Space Agency astronauts, to experience zero-gravity. All so he can describe it to you, in his own words.
Ratings & Reviews
Friends & Following
Create a free account to discover what your friends think of this book!
Community Reviews
Displaying 1 - 16 of 16 reviews
September 16, 2026
Brains Vs Firepower In Action Filled 2nd Installment
When The Light Failed, book 2 in the fascinating Ark trilogy, follows shortly after book 1, with the Russians from the Arkangel in control of the critical systems of Cassandra's Dream and the bunker on the island compromised. Its a battle of brain power vs firepower, with scientists forced to become soldiers. The book is immediately fascinating and stays that way straight through the epilogue. The real heart of the narrative, however, are the characters and the remarkable growth shown by many of the characters! Overall, 5/5 stars! When The Light Failed exceeded my already sky high expectations! Highly recommended to anyone who enjoys thoughtful, character driven apocalyptic survival thrillers and science fiction in general!
When The Light Failed, book 2 in the fascinating Ark trilogy, follows shortly after book 1, with the Russians from the Arkangel in control of the critical systems of Cassandra's Dream and the bunker on the island compromised. Its a battle of brain power vs firepower, with scientists forced to become soldiers. The book is immediately fascinating and stays that way straight through the epilogue. The real heart of the narrative, however, are the characters and the remarkable growth shown by many of the characters! Overall, 5/5 stars! When The Light Failed exceeded my already sky high expectations! Highly recommended to anyone who enjoys thoughtful, character driven apocalyptic survival thrillers and science fiction in general!
September 24, 2026
An Exciting Second Part with a Few Errors
I am really enjoying this storyline and I can’t wait until the next book. I was deeply immersed in the story. The only thing that kept me from giving this book 5 stars was the author confusing the gender of his characters. Several times he referred to male characters as female and female characters as males. Aside from those errors, this story is perfect. I would love to see this made into a movie or television series.
I am really enjoying this storyline and I can’t wait until the next book. I was deeply immersed in the story. The only thing that kept me from giving this book 5 stars was the author confusing the gender of his characters. Several times he referred to male characters as female and female characters as males. Aside from those errors, this story is perfect. I would love to see this made into a movie or television series.
September 25, 2026
Initially a four-star rating, dropped to three.
Again, not enough revealed. I do hope that the plan isn't to drag this story out to 5+ books, piecemealing us the actual story. Talk about being fed breadcrumbs.
There's a lot more character development here, which is a positive.
There's already one enemy - the black dome - the author then adds two more. However, both of these are terrible villains. Mutineering Russians who want to stockpile as much resources as possible so they can survive a little longer. Then we have the idiotic super secret MI6 agent who's still wishing to kiss his "majesty's" rear end. Who wants to bring a dead man to "justice" when the world is about to end in less than a month. Who's dead set on destroying everything Chen had set up, even though it's the only thing keeping a small remnant alive. Terrible writing.
Again, not enough revealed. I do hope that the plan isn't to drag this story out to 5+ books, piecemealing us the actual story. Talk about being fed breadcrumbs.
There's a lot more character development here, which is a positive.
There's already one enemy - the black dome - the author then adds two more. However, both of these are terrible villains. Mutineering Russians who want to stockpile as much resources as possible so they can survive a little longer. Then we have the idiotic super secret MI6 agent who's still wishing to kiss his "majesty's" rear end. Who wants to bring a dead man to "justice" when the world is about to end in less than a month. Who's dead set on destroying everything Chen had set up, even though it's the only thing keeping a small remnant alive. Terrible writing.
October 4, 2026
New Fear Unlocked!
I’ve always avoided movies and books about space, because the vastness overwhelms my brain. Now, having read a couple of books about the sun disappearing, I’m terrified of this as well. The author did a great job of expanding characters, and the plot is great as well. I can’t wait to see more of his stuff.
I’ve always avoided movies and books about space, because the vastness overwhelms my brain. Now, having read a couple of books about the sun disappearing, I’m terrified of this as well. The author did a great job of expanding characters, and the plot is great as well. I can’t wait to see more of his stuff.
October 26, 2026
Fresh plot for post apocalyptic fiction, great read
I read a lot of this genre so it takes a lot to be original. I couldn’t wait to find out what happened. Now I need the 3rd book to find out The Who and why and to some degree how, although there’s the beginning shown in the second book.
I read a lot of this genre so it takes a lot to be original. I couldn’t wait to find out what happened. Now I need the 3rd book to find out The Who and why and to some degree how, although there’s the beginning shown in the second book.
September 15, 2026
exciting and cliffhanger
Mr. Calvert you have done an exceptional job with this story. Much sadness for the loss of important characters but a hope that the remaining passengers will experience and rebuild a new future! Let November 3rd come quickly for the finale!
Mr. Calvert you have done an exceptional job with this story. Much sadness for the loss of important characters but a hope that the remaining passengers will experience and rebuild a new future! Let November 3rd come quickly for the finale!
September 15, 2026
Book Two is an Exciting Read
Book two did not disappoint! I've enjoyed reading books one and two. I think the characters are well written and relatable. I'm interested to see where the rest of the story is headed. I will definitely be reading book three!
Book two did not disappoint! I've enjoyed reading books one and two. I think the characters are well written and relatable. I'm interested to see where the rest of the story is headed. I will definitely be reading book three!
September 17, 2026
The premise of the series is interesting, which made me stick with the second book, but the execution leaves something to be desired, especially when the author inserts supposedly humorous dialogue into tense scenes.
October 8, 2026
Excellent Story!
This was an excellent story and well defined characters. It is sad but realistic that not even the end of the world can motivate mankind to pull together 100% to survive.
This was an excellent story and well defined characters. It is sad but realistic that not even the end of the world can motivate mankind to pull together 100% to survive.
October 26, 2026
Great Read
A real page turner. Already have Book 3. Will save written review until that’s read. So far, so good. Really like this author and have read several other of hos books.
A real page turner. Already have Book 3. Will save written review until that’s read. So far, so good. Really like this author and have read several other of hos books.
October 29, 2026
Interesting Premises
Such a wonderful and terrorizing story. Dark times but not without humor and the concepts of how humans deal with such horrid adversity. Could an alien race really do this to a living world? Let us continue to read on to the 3rd book and see!
Such a wonderful and terrorizing story. Dark times but not without humor and the concepts of how humans deal with such horrid adversity. Could an alien race really do this to a living world? Let us continue to read on to the 3rd book and see!
September 23, 2026
terrific book
This second book really is a thriller. I enjoy Joshua T. Calvert’s writing so much. Easy to read. Hope book 3 isn’t too far off .
This second book really is a thriller. I enjoy Joshua T. Calvert’s writing so much. Easy to read. Hope book 3 isn’t too far off .
September 27, 2026
where are those sneaky aliens?
Or maybe it isn’t aliens. But, really all of his books have aliens, I think. Maybe earth’s callous billionaires are behind this, don’t know yet.
Or maybe it isn’t aliens. But, really all of his books have aliens, I think. Maybe earth’s callous billionaires are behind this, don’t know yet.
September 27, 2026
can’t wait to read the final part
Great storyline finished in one go and anxiously waiting for closure with the third and final book! Compliments to the author
Great storyline finished in one go and anxiously waiting for closure with the third and final book! Compliments to the author
September 29, 2026
interesting premise
Good read, interesting premise. Lots of character and world development brings the story to life. Can’t wait for book three
Good read, interesting premise. Lots of character and world development brings the story to life. Can’t wait for book three
October 12, 2026
Good fun part 2.
Tackles all the hard issues, defection, realisation and the true nature of the monk.
Looking forward to the next one
Tackles all the hard issues, defection, realisation and the true nature of the monk.
Looking forward to the next one
Displaying 1 - 16 of 16 reviews