Matthew James Books in Order

A sandstorm exposes ancient ruins in southern Algeria, bringing archaeologist Hank Boyd and his team to investigate. Inside, human and inhuman dangers await, while a violent organization pursues the discovery despite a warning left at the entrance.

Hank Boyd and his team pursue Zero, the organization threatening to unleash an ancient weapon against humanity. Their search takes them from the Yucatan to Washington, D.C., where enemies linked to the past prepare a devastating attack.

Exhausted archaeologist Hank Boyd considers retirement until coordinated attacks force his team to flee and regroup. Information from an old enemy points to the Tower of Babel’s ruins and a powerful force determined to capture Hank alive.

When a meteor strikes Central Park, its radiation violently transforms nearby witnesses into predatory creatures. NYPD detective Frank Moon must cross a collapsing Manhattan to find his wife as the extraterrestrial disaster spreads through the city.

Game warden Logan Reed takes the surviving members of his anti-poaching unit into the Congo to trace a devastating virus. Supported by American soldiers and a local guide, they discover unexpected threats hidden deep in the jungle.

A resurfacing virus drives humans and animals in the Serengeti into murderous violence. Former Australian Special Forces soldier Logan Reed, now a game warden, works with his team and zoologist sister to identify its source before it spreads.

CIA operative Willy Flores returns to Miami hoping for a break with her family after a mission in Japan. Instead, she enters the city’s drug underworld to rescue her addicted sister from dealers with dangerous resources.

Hank Boyd and Nicole travel to Chichen Itza after a trusted contact witnesses a murder. Their investigation reveals a secret sought centuries earlier by Ponce de Leon, drawing the archaeologists into conflict with the Order of An’tala.

Young Hank Boyd joins his historian father to investigate an Egyptian royal tomb, then contracts a dormant virus inside. As they race to identify the infection, ancient warriors pursue those who disturbed their monarch’s burial place.

Seven years after creatures released by an earthquake kill his wife in Madagascar, Ian Hunt agrees to guide an exploratory team underground. Searching for answers beneath Andringitra National Park, they encounter predators and discoveries that threaten their survival.

After escaping devastated Manhattan, Frank Moon and his wife return to South Florida to locate their families. The meteor-born predators known as the Unseen have ravaged their old home, turning their search into another struggle for survival.

Violet survives the betrayal that destroys her assassin clan and joins an American CIA operative to seek revenge. Their investigation into her sisters’ deaths also exposes the Southeast Asian trafficking network that the clan’s final mission targeted.

Frank Moon leads a growing survivor community near Gatlinburg, Tennessee, but dwindling supplies force him and Jill into town. Alongside the Unseen’s attacks, they become caught between armed human factions pursuing control of the devastated area.

Jillian Moon confronts the Unseen inside New York’s Museum of Natural History. Set during the events of Origin, this companion story revisits her first encounter with the threat devastating the world around her.

Hope Diaz, the youngest character in The Unseen series, struggles to survive amid terror and loss. Set during the events of Desolation, this companion story follows her perseverance as the catastrophe tests her ability to endure.

Frank Moon searches for his missing in-laws at their cabin in Gatlinburg, Tennessee, while protecting his family from the Unseen. There he discovers that some creatures carry a lethal virus that threatens the remaining human population.

Scientists aboard a DARPA research ship investigate an Antarctic octopus’s venom as a possible battlefield painkiller. A violent storm wrecks their laboratory, and an infection acquired during dissection transforms the lead researcher into something dangerous.

Veteran turned archaeologist Elliot Oxley discovers an alien energy core beneath a Dead Sea cave. Zealots and mercenaries pursue his small team, forcing them to protect the artifact from someone intent on using it to fulfill a prophecy.

Visiting Auschwitz in memory of his grandmother, retired Delta operator Jack Reilly is taken hostage by mercenaries. Their commander forces him to help search for a legendary Nazi gold train, leaving innocent lives dependent on his cooperation.

Jack Reilly travels to Colombia to investigate the kidnapping of a fellow Tactical Archaeological Command agent. A message claiming El Dorado exists draws him into competition with a drug lord financing a search for the lost city.

A cryptic Theodore Roosevelt letter discovered in Wyoming links hidden wealth to the Seven Sisters of Native American folklore. Jack Reilly helps a fellow park ranger investigate, while a debt-ridden casino owner pursues the potential fortune.

Jack Reilly investigates an elderly Sherpa’s warning about the curse of Shangri-La. As a Chinese biotechnology company joins the search for the hidden Himalayan paradise, he must uncover its secrets before its inhabitants become subjects of ruthless experimentation.

Charlee Flynn discovers that her respected antiquities-expert parents are accomplished thieves. When an old enemy returns, their hunt for a cursed diamond linked to Anne Bonny pulls her into dangerous heists, family secrets, and forgotten pirate history.

A wrecked aircraft found on a remote Pacific island draws Jack Reilly into the mystery of Amelia Earhart’s disappearance. The discovery points toward a hijacking and information about Marco Polo’s lost fleet, opening another dangerous search for hidden riches.

Ian Hunt and Mackenzie Moore return to the underground world beneath Madagascar with an armed team seeking the Razambe tribe. Their deeper expedition encounters new horrors and a dominant creature that threatens to turn the explorers into prey.

Charlee Flynn follows the Book of Thieves toward a fortune looted during the Second World War and lost in Southeast Asia. Ruthless rivals and rumors of a legendary guardian turn her treasure hunt into a dangerous race.

An armed raid interrupts Jack Reilly and Mayleen Wu’s visit to a Roman antiquities event. A stolen relic connects the attackers to the vanished Ninth Legion and a centuries-old mission to locate Alexander the Great’s tomb.

Paleontologist Noah Clark is preparing to unveil a discovery when debris from a supernova strikes Earth. An electrified fog brings Cretaceous creatures into the present, forcing him and humanity to survive a world suddenly reclaimed by dinosaurs.

A theft at Machu Picchu sends Charlee, Sean, and Sydney Flynn into the Peruvian Amazon in search of a powerful stone. A rogue general pursues the same prize, while its connection to a deadly blade complicates their quest.

Evidence of collaboration with terrorists places Jack Reilly and Mayleen Wu on the FBI’s wanted list and shuts down their organization. Forced to flee, Jack continues his fight against antiquities traffickers by targeting a syndicate in Mexico.

A catastrophic breach releases prehistoric and highly evolved creatures across Madagascar. Ian Hunt and his surviving team join the military to protect civilians and contain the invasion before the growing outbreak overwhelms the island and spreads beyond it.

Charlee Flynn’s Mardi Gras birthday trip changes when a stranger begs her to save his son. Beneath New Orleans, ancient myths, lethal traps, and a stalking threat draw her into a rescue with little time to spare.

Returning to Costa Rica, Charlee Flynn learns that Carmen Castro’s shopkeeper has been kidnapped. His captors demand the return of an item that now belongs to Charlee, forcing her to protect something essential while confronting another dangerous rescue.

Charlee Flynn hopes to recover from her latest adventure with rest, company, and movies. The appearance of an ancient evil connected to the forces she recently escaped interrupts her plans and pulls her into danger again.

After an expedition in the Congo is devastated by mysterious creatures, philanthropist Julian Harlow seeks Ian Hunt and Mackenzie Moore’s help. Their knowledge of underground ecosystems may uncover what attacked the team, but new horrors await in the jungle.