Joshua T. Calvert

Gavin and his crew have left the borders of the human hegemony and are on their way to Sol to stop the dawning catastrophe....

194 passengers. 24 hours. No memories. One deadly countdown. Dr. Joshua Hammond wakes up on a flight with no idea who he is—only a glowing green implant ticking down from 24 hours. Everyone on board has lost their memory. Everyone has the same timer. When the plane lands in a ghost city and...

Humanity's only colony in the distant Archimedes system is in turmoil... Contact with Earth has been lost for generations and mysterious waves of disappearing colonists have been shaking the five moons for decades. When suddenly a wormhole appears in the middle of the system, the Union Navy...

For generations, we colonized worlds, and the human race spread throughout the galaxy. One discovery could end it all.

The situation on Earth is coming to a head; while the infestation was brutally contained in Siberia, it has spread uncontrollably in Los Angeles. Jenna wants to prevent the spore from causing even worse damage at all costs and tightens the noose around the Initiative.

In 2018, Canadian archaeologist Ron Jackson makes a mind-boggling discovery in Antarctica - right before disappearing without a trace, leaving behind only his controversial theory that humans have lived on Earth far, far longer than we think they have....

A coming interdimensional war. A race against time. A thrill ride like no other. Multimillion-copy bestselling authors Douglas E. Richards and Joshua T. Calvert team up for the first time to deliver an explosive, high-stakes science-fiction thriller, one that will leave you breathless. Deep in...

Deep beneath the Pyramid of the Sun, archaeologist Charles Bowen and his protege Marcus Brown uncover an artifact that rewrites history—and paints a target on their backs.

When the solar flare took out the world's power… nobody could explain why the street lights still glowed in Jakarta. Was it a signal from space?

Dr. James Barron narrowly prevented a catastrophic interdimensional invasion in The Rift. But now he must deal with a myriad of threats as great as the one he overcame. Threats including growing rifts in the fabric of reality, anomalous superstorms, and conspiracies that just might span worlds...

Humanity is on the run after the epic battle of Lagunia. Oberon becomes the predator. Find their kidnapped crewmates. End the alien incursion into the human hegemony. Too often the predator becomes the prey. With the enemies of humanity emboldened by their success, Oberon takes the fight all the...

For years, Filio Amorosa has had one goal, and only one goal: getting back to Mars. All that matters is finding out what happened on her mission there, and why she can’t remember any of it. But when she finally discovers the truth, it blows her whole world apart....

Alone in deep space, she wakes to find her crew dead, her ship failing, and a mysterious signal pulsing from a distant planet. Is she truly alone?

It’s our planet. But it’s their war.... On New Year's eve 2022, unknown flying objects appear over Europe and ignite an inferno of violence among themselves. Debris from one of the spacecraft falls on Athens, turning the city center into a smoking crater. The destroyed remnant of the...

James, Hannah, and Wolf face their greatest challenge yet in the pulse-pounding conclusion to The Rift trilogy. Finally reunited on an advanced, alternate Earth where the mighty Roman Empire never died, James, Hannah, and Wolf now stand at the precipice of an interdimensional war threatening...

James and his team are stranded on Prime. Their way back is blocked, and they face a world taking its last breaths. Only a small area of forest seems to defy the radiation and storms, and its nature puzzles the explorers. But on the horizon, they see the remains of a city and gain new...

FBI geneticist Mason Brown and Danish Interpol agent Jonna Nielsen have just seventy-two hours to find the missing man they call The Immortal. He's on the run across Europe and his genetic material may be the most valuable commodity in human history.

From the darkness of space, a global killer asteroid is on a collision course. Will the world's turmoil destroy mankind before it arrives?

The transition through the experimental teleporter on Al'Antis was successful. James and his team have found the original teleporter of the elders. But what awaits them on the other side is not what they expected. They find the answers they so ardently desire, but none of them makes their future...

Los Angeles lies in ruins. While the city is sealed off to contain an unknown contamination, the survivors battle strange anomalies under the toxic dust cloud. Among the survivors are Lee and Branson.