Joshua T Calvert Books in Order

Theodore and his team push into enemy territory to expose a conspiracy tied to Ganymede. On the moon, Rachel follows the trail of an alien robot and discovers that the darkness around Jupiter is far from empty.

A race to the outer solar system ends in disaster when a returning probe crashes on Ganymede and another sample sparks chaos on Earth. Astronaut Rachel Ferreira heads for the silent moon while mercenary Theodore is dragged into a deadly corporate struggle.

The fight over alien artifacts spreads across Earth while Rachel's mission to Ganymede grows more dangerous from within. As the moon changes before their eyes, Rachel and Theodore race separate clocks that may be counting down to the same disaster.

After an archaeologist vanishes following a shocking discovery in Antarctica, investigators Agatha Devenworth and Pano Hofer start pulling on dangerous threads decades later. Their case collides with the wreckage of a Mars mission and a mystery that could rewrite human history.

Filio Amorosa wants one thing only, to get back to Mars and recover the truth behind her lost memories. Meanwhile, Agatha and Pano leave a secret underground base to chase a plot that could decide humanity's future.

Years after the fossil on Mars changed everything, political turmoil around the Builders erupts into murder when Hortat is assassinated on election night. Pano Hofer is pulled back into a deadly investigation, and Agatha is never far behind.

A stranger with a strange implant found in the Finnish wilderness looks like the chance of a lifetime for Bill and Steve. Ten years later, in a transformed world, a father and daughter fight to survive while humanity's fate hangs on the same signal.

When a fisherman pulls a strange object from the sea, Earth soon falls into total darkness. A CIA agent in Sulawesi and a physicist trying to reach the moon base race to understand the phenomenon before civilization fully collapses.

An alien structure beneath Lake Maracaibo reveals itself as a teleporter, but using it leaves researchers in comas and raises terrifying questions about what lies on the other side. James and the team may have opened a door that should have stayed shut.

Unknown craft appear over Europe and one crashes into Athens, leaving the city in ruins and humanity in the dark about the war unfolding above it. As Nikos fights to keep Maria alive, a special forces team heads into Africa after another landed ship.

Earth is unraveling as radiation, wreckage, and warped physics spread from the alien remnants. With Europe desperate to preserve a future for humanity, one risky opening appears, but using it may cost more than anyone can bear.

The crisis around P3X-888 turns into a fight for mankind's survival. Nikos and Jacek are pulled into a much older conflict than Earth ever understood, while leaders back home still fail to grasp how close doom really is.

The resistance is fragile, the Forum is tightening its grip, and a killer is stalking the metaworld. As Steve uncovers a horrifying truth, June races to destroy the source of a new signal before the future closes for good.

A year after June's last mission, the final free humans are still losing ground. To save what is left, June and Ace must find Janika and uncover the truth behind the Black Fortress, a place you can enter, but never leave.

After Lagunia, Oberon goes on the hunt for kidnapped crewmates and takes the fight back to the enemy. The chase leads straight toward Sol, where the future of humanity is running out faster than Bradley can reach it.

Cut off from Earth for generations, the Archimedes System is already shaken by disappearing colonists when a wormhole suddenly appears. Captain Jeremy Brandt and the UNS Concordia are sent through it to face an ancient enemy waiting in the dark.

Gavin and his crew head for Sol to stop a coming catastrophe, but their allies have plans of their own. As battle erupts in Earth's orbit, Janus must choose his loyalties while the full scale of the imperial conspiracy comes into view.

With the colony dying and the stakes higher than ever, Jeremy and his crew are forced into a final game over humanity's future. Secrets buried beneath the barrier are rising, and Pascal may be the only one ready to play for keeps.

Sol has fallen, Earth is under growing alien control, and Oberon survives only as a ghost on the edge of the battlefield. When a surviving fleet admiral issues a desperate new order, the crew has no choice but to try the impossible.

Stranded on Prime, James and his team face radiation, storms, and a world that seems to be dying by degrees. A surviving forest and the ruins of a city offer hope, until the truth about the planet proves darker than they imagined.

James and the team finally reach the original teleporter of the elders, only to find a place that overturns everything they believed, including time itself. If they can return to Earth at all, home may no longer be the place they left.

Jeremy, Pascal, and the Concordia survivors finally reach Earth, only to find a very different balance of power than they expected. They are pawns in a larger game now, and the next mission may be even deadlier than the last.

A fragile peace with the Clicks is all that stands between humanity and fresh ruin. As conspirators move to shatter that peace, Oberon and its crew race toward one last mission that could save the Federation or finish it for good.

After a brush with the Never and an escape from a stealth ship, Gavin and his crew are stranded on an alien world. Back in human space, Janus Darishma begins uncovering a conspiracy that reaches farther into the empire than anyone guessed.

The Archimedes System is burning as human factions and alien forces tear into one another. While Pascal fights to stay alive, Jeremy and the crew of the UNS WizKid try to survive passengers whose own agenda could wreck any hope of peace.

Captain Konrad Bradley commands the aging battleship Oberon, a mocked relic crewed by outcasts on the fringe of human space. Then a secret project lands in his lap, and the last warship anyone respects least may become humanity's best chance.

Captain Gavin Andal and the misfits aboard the Lady Vengence are not looking to be heroes. Then a mysterious swarm devours an entire system and heads their way, forcing them into a fight that could decide the fate of humanity.

Princess Peraia disappears into the mysterious realm known as the Orb while chasing a secret that could reshape the universe. A botanist named Pyrik is drawn after her, never sure whether he is following a path toward rescue, betrayal, or both.

FBI geneticist Mason Brown and Interpol agent Jonna Nielsen have seventy-two hours to find a missing man whose DNA may unlock immortality. Half the world wants him first, and the truth about who he is could upend history as well as science.

A disaster aboard the International Space Station sends two surviving astronauts back to Earth with a story that does not add up. ESA psychologist Amina Young starts pulling at the contradictions and finds a mystery tied to politics, secrecy, and survival in orbit.

A strange light on Elysium Mons and other impossible clues turn Mars into the center of a new mystery. Linguist Rachel Fereira is recruited for a mission that may be about far more than geology, and far less than the public has been told.

Astronaut Lee Rifkin is sent to investigate Cassandra 22007, a space object behaving in deeply worrying ways. On Earth, agent Jenna Haynes chases the shadow group that may have known about the threat long before NASA did.

Cassandra still grips the planet as Los Angeles reels from destruction and Lee races not to miss the most important launch of his life. Jenna, trapped inside a sealed contamination zone in Siberia, may be the only one who sees how bad it is becoming.

Los Angeles is sealed beneath toxic dust and strange anomalies while Lee fights to get out in time for his mission to Cassandra. In Ulan-Ude, Jenna hunts the truth in a city already lost, with the Russian military preparing a brutal final solution.

The infestation is spreading in Los Angeles, Jenna is closing in on the Initiative, and the situation on Earth is reaching a breaking point. Near Cassandra, Lee must decide which part of himself can survive what comes next.

Astronomer Melody Adams ruins her career by insisting something impossible is moving through the outer solar system. Years later, when the object nears Saturn and slows down, she is dragged back into the mystery she may have been right about all along.

An impossible reflection and a strange signal from Shackleton Crater suggest an alien artifact hidden beneath the moon's surface. Astronaut Charlie Reid is thrust into a new lunar race where science, geopolitics, and survival are all on a collision course.

A lone astronaut wakes in deep space to find her crew dead, her ship failing, and only a glitchy robot left to help. Then sensors pick up a pulsing signal from a distant world, and isolation becomes the least of her fears.

Passenger jets crash, power grids fail, and the global system starts to buckle in minutes. Journalist and computer scientist James Miller suspects an AI-driven cyberweapon, and that suspicion makes him a target in a race to stop total collapse.

Beneath the Pyramid of the Sun, Marcus Brown and his mentor uncover a relic that could rewrite history. Within hours, Marcus is running from killers, the FBI, and the authorities, with no idea who can be trusted or what the artifact really means.

Thor Dejeune and Maya Wilson are in hiding, Marcus Brown has been abducted, and a bigger conspiracy is surfacing in Washington. Chasing covert money and buried truths, the survivors have one chance to expose what the artifact has set in motion.

Decades after two scientists vanished while studying a mysterious sphere in Antarctica, reality starts breaking apart, a skyscraper disappears, and a jet crashes where it never could have flown. Physicist James Barron uncovers a widening breach to a ruthless parallel Earth preparing to invade.

After barely averting interdimensional war, James Barron faces new rifts, impossible superstorms, and a swirling nexus left behind at Camp David. As conspiracies spread across worlds and Hannah Walker remains lost beyond a portal, he gambles everything to understand the anomaly and bring her back.

Reunited on an alternate Earth where the Roman Empire never fell, James, Hannah, and Wolf confront a full scale invasion as warships pour through widening tears in reality. To save both worlds, they must repair the fabric of existence itself before it collapses on everyone.

Joshua Hammond wakes on a flight with no memory, a ticking implant, and one hundred ninety-three other passengers in the same condition. When the plane lands in a dead city and people start dying, the countdown becomes a fight for the truth.

A wave of psychotic episodes and mass suicides sends Dr. Alexandra Lennox into the Colombian jungle while a covert NASA crew reaches Europa and finds an impossible signal in the ice. Two mysteries, worlds apart, are heading toward the same revelation.

The second book continues the Frequency story as the fallout from the signal deepens and the stakes grow even larger. What began as separate mysteries on Earth and near Europa is still moving toward a dangerous, reality-shifting answer.

A stand alone collaboration between Douglas E Richards and Joshua T Calvert, Nexus: A Science-Fiction Thriller brings their trademark blend of big speculative ideas, high stakes action, and near future science to a new story that pushes humanity close to the brink.