Joshua T. Calvert

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...

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...

When a stranger with a high-tech implant is found in the remote Finnish wilderness, neurosurgeon Bill and his computer scientist friend Steve see an opportunity. But they don't know what powers they're up against....

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?

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.

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.

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...

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....

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....

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

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?

When NASA's Sentinel I satellite detects an impossible reflection and a mysterious signal from Shackleton Crater, the world is thrown into chaos. The discovery points to one chilling truth: an alien artifact lies hidden beneath the lunar surface—and it wants to be found.

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.

James, Hannah, and Wolf face their greatest challenge yet in the pulse-pounding conclusion to The Rift trilogy.

In Lake Maracaibo, in the northwestern part of Venezuela, a long-hidden extraterrestrial artifact underneath the ocean floor triggers a disaster....

At the dawn of 2026, twenty passenger jets crash across the U.S. within minutes. Japan goes dark. Europe's banking systems freeze. And that's just the opening move. While authorities scramble to blame hackers, computer scientist and journalist James Miller suspects something far worse—an...

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...

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...

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...