App Store

Google Play

{{seriesTitle}} - The book series

image.devices-Singapore 2x

Step into an infinite world of stories

Listen and read

J.F. Penn

An ancient power. A desperate quest. The clock is ticking.
When psychologist and religious expert Dr. Morgan Sierra's sister and niece are kidnapped, she's thrust into a deadly race against time to find twelve ancient stones that could unleash unimaginable power. With only days until Pentecost and the kidnapper's deadline, Morgan must use all her knowledge and resources to track down the artifacts.

She's not alone in the hunt. Jake Timber, an enigmatic agent of ARKANE, a secret British agency investigating the supernatural, has his own orders to retrieve the stones at any cost. Torn between her desperate need to save her family and Jake's mission to secure the stones, lines blur as Morgan and Jake forge an uneasy partnership. 

From the holy sites of Israel and the Vatican to the desert of Tunisia and the Sonoran wilderness of Arizona, Morgan and Jake face sinister forces, ancient traps, and a fanatical enemy determined to use the stones' power for their own dark purposes. Danger, betrayal and a growing attraction complicate their quest.

With Pentecost approaching and a storm of apocalyptic proportions brewing, Morgan must confront her past and unearth long-buried secrets to have any hope of saving her family and preventing global catastrophe. Emotions run high and faith is tested as the clock ticks down.

Can Morgan stop the stones from falling into the wrong hands, or will she have to choose between saving her family and saving the world?

Fast-paced and gripping, Stone of Fire is a thrilling adventure that weaves together history, archaeology, and the supernatural into a pulse-pounding race against time. Perfect for fans of Dan Brown, James Rollins, and Steve Berry, this action-packed novel will keep you turning pages late into the night.

Stone of Fire is book 1 of the ARKANE Thriller series by award-winning, New York Times and USA Today bestselling author, J.F. Penn.

Veronica Giguere

Curl Up Press

ARKANE Thrillers

Stone of Fire

Two billion people are about to die… and they’re the lucky ones.
When a man in a hospital gown jumps to his death from the Western Wall in Israel, the authorities think it’s just another victim of Jerusalem Syndrome: a religious psychosis triggered by a visit to the holy city.

But when a second victim ritually disembowels himself, it’s the sign of much worse to come. Thanatos — a fanatical group dedicated to the destruction of the world — is on the move again.

The only ones who can stop them are ex-Israeli military psychologist, Oxford professor, and religious expert Morgan Sierra; and Jake Timber, agent of ARKANE, the British agency tasked with investigating — and sometimes saving the world from — the supernatural.

Last time, Morgan and Jake worked together to stop Thanatos from bringing about a dark version of Pentecost. This time, Thanatos is mixing science with sacrilege — combining the Devil’s Bible with mind-control technology to murder a quarter of the human race.

Together, Morgan and Jake will travel from the hallowed halls of Oxford, to the labs of a biotech company with a dark agenda, to a chapel made of human bones. They’ll go anywhere, do anything, to stop Thanatos.

But they have to hurry.

Thanatos is on the rise. Apocalypse is at the gates. And the only way to save a quarter of the world is for Morgan to uncover the secrets of her past… at the cost of her own future. Death awaits in a Crypt of Bone.

Crypt of Bone is book 2 in the ARKANE thriller series but it can be listened to as a stand-alone story.

Crypt of Bone

It is the seat of judgment. The pinnacle of holiness. It is the Ark of the Covenant… and it’s the most dangerous weapon in existence.
A group of fanatics wearing masks of Egypt’s gods slaughter the curator of Cairo’s most famous museum. A cleaner in Washington, DC, discovers a decapitated head on top of a replica of the Ark of the Covenant. And someone is sharing videos of the deaths with extremists all over the world.

It’s a job too big — and too strange — for the normal authorities, but it’s right up the alley of ARKANE, the British agency tasked with investigating mysteries on the edge of the supernatural.

Normally ARKANE would send its best agents: Morgan Sierra, ex-Israeli military and professor of psychology and religion; and Jake Timber, a man as mysterious as he is dangerous.

But Jake is in a coma, nearly killed on a previous mission — so Morgan will have to go it alone. Because the death toll is rising, and there’s no time to wait.

In over her head, in constant danger. Pursued by vicious mercenaries bent on revenge, hunted by assassins willing to do anything for their cause. But Morgan can’t stop, because the Ark of the Covenant is the prize, and it may be more than a simple religious artifact.

It may be the secret to ancient alchemy, and the unlocking of a scientific breakthrough that could save the world… or end it.

Ark of Blood is book 3 in the ARKANE Thriller series but it can be listened to as a stand-alone story.

Ark of Blood

A relic, stolen from the heart of an ancient city. An echo of nationalist violence not seen since the dark days of the Second World War.
Budapest, Hungary. When a priest is murdered at the Basilica of St Stephen and the Holy Right relic is stolen, the ultra-nationalist Eröszak party calls for retribution, and anti-Semitic violence erupts in the city.

Morgan Sierra, psychologist and ARKANE agent, finds herself trapped inside the synagogue with Zoltan Fischer, a Hungarian Jewish security advisor. As terrorism escalates, Morgan and Zoltan must race against time to find the Holy Right and expose the conspiracy, before blood is spilled again on the streets of Budapest.

One Day In Budapest is a chilling view of a possible future as Eastern Europe embraces right-wing nationalism. A conspiracy thriller, where religion and politics intersect.

One Day In Budapest is book 4 in the ARKANE thriller series but can be listened to as a stand-alone story.

One Day In Budapest

An ancient staff of power that can summon Ragnarok, the Viking apocalypse.
When Neo-Viking terrorists invade the British Museum in London to reclaim the staff of Skara Brae, ARKANE agent Morgan Sierra is trapped in the building along with hostages under mortal threat.

As the slaughter begins, Morgan helps museum researcher and reluctant psychic, Blake Daniel, to discern the past of the staff through the mists of time to the Viking invasion generations ago.
Can Morgan and Blake uncover the truth before Ragnarok is unleashed, consuming all in its wake?
Day of the Vikings is a fast-paced, action-adventure thriller set in the British Museum, the British Library and the islands of Orkney, Lindisfarne and Iona. Set in the present day, it resonates with the history and myth of the Vikings.

The story features Morgan Sierra from the ARKANE thrillers, and Blake Daniel from the London Crime Thrillers, but it is also a stand-alone novella that can be read and enjoyed as a stand-alone.

Day of the Vikings

For millennia, they have held the gates of Hell shut against the darkness. But now they’re gone… and the gates are swinging wide.
When Morgan Sierra receives a package with a note from her father — murdered in a suicide bombing years ago — she goes on high alert. As an agent of ARKANE, the secret organization tasked with investigating the supernatural, Morgan has seen unusual things like this before. But even she isn’t prepared to face the danger that’s coming… from her own past.

Her father’s death was no accident. A member of the Remnant — a group of holy men schooled in the deepest mysteries of Kabbalah — her father was one of those charged with protecting our world from the demons that want to take it; to keep sealed the gates of Hell.

But the Remnant is dying, its members murdered by Adam Kadmon: a man once groomed to lead the Remnant before turning to twisted paths of power. Kadmon wants to open the portal between our world and Hell, to create a twisted, demonic version of our world over which he will reign supreme.

Now, Morgan and her partner — Jake Timber, the enigmatic agent who recruited her for ARKANE — are on the run. From the holiest cities in Israel to underwater cities lost to history, they must follow this trail to the end. To find a way to stop Kadmon before he offers the final sacrifice. A sacrifice of pain. A sacrifice of blood. A sacrifice of one of the children of the Remnant.

Kadmon intends to spill the blood of Morgan Sierra… and open wide the Gates of Hell.

Gates of Hell is the sixth installment in the bestselling ARKANE series by New York Times and USA Today bestselling author J.F. Penn. Listen as part of the series, or as a standalone adventure.

Gates of Hell

Any wish can be granted: money, power… even death itself can be beaten back. All it takes is the blood of an angel.
When a woman is crucified and burned alive in the center of New York City, Jake Timber is already on his way. 

Tasked with locating an extremist group interested in a recently discovered relic, the Cloisters Cross, Jake expected trouble. After all, as one of the top agents of ARKANE, the secret organization entrusted with protecting the world from supernatural threats, he’s been in the game a long time, and has saved the world more than once. 

But that’s the problem. Battered and broken again and again, the constant physical and mental struggles of his ARKANE missions have left Jake scarred.

Now, his investigation will lead Jake to the Blood of the Angel: a relic that can grant any wish to whoever drinks its contents. A race against time, and against the infinite resources of Gilles Noiret, a dying, ruthless billionaire willing to sacrifice anyone else to save his own life.

But this time, the race is different. Because this time Jake isn’t sure if he’s trying to stop Gilles and save the world… or if he’s looking for the Blood of the Angel so he can use it himself. What price would he pay to ease his own pain? Would he sacrifice one person? Two?

Or maybe even an entire city?

One Day in New York (readable as part of the bestselling ARKANE series or as a standalone title) is a supernatural adventure thriller from the mind of New York Times and USA Today bestselling author J.F. Penn.

Jeffrey Kafer

One Day in New York

“I am become Death, destroyer of worlds.” — Bhagavad Gita
London. A street cleaner walks into the middle of Trafalgar Square and blows himself up. No mere act of terrorism. The explosion rips open a crater to reveal the underground headquarters of ARKANE — the ultra-secret British agency tasked with investigating the supernatural.

Within moments, armed commandos rappel into the breach, blow open ARKANE’s vault, and steal a single box containing an ancient relic linked to the Indian god Shiva.

By the time ARKANE’s best agents, Morgan Sierra and Jake Timber, arrive on the scene, it’s over. All they have is some video, a few thin leads, and the whispered words, “Don’t let the pieces come together.”

Soon, Morgan and Jake will find themselves on a quest unlike any they’ve experienced yet. Racing from the slums of Mumbai to the temples of Kolkata, from the unmarked graves in the killing fields in Rwanda to the most famous tomb of all — the Taj Majal. On the run from a mad scientist who wants to use ancient Indian relics to rewrite the genetic code of every human alive. In search of a threat woven into the very fabric of existence.

They’ve faced danger before, but never like this. Because in a place beyond madness, all that remains is Death, the Destroyer of Worlds.

New York Times and USA Today bestselling author J.F. Penn brings you her biggest thrill ride yet in her eighth ARKANE adventure. Listen as a stand-alone story or as part of the series.

Destroyer of Worlds

A buried sarcophagus locked by seven seals. A prophecy that heralds the End of Days ...

A marble tablet found in the ruins of Babylon warns of the resurrection of a banished serpent in the final days. A sarcophagus is discovered in the deepest ocean, locked by seven seals scattered throughout the ancient world.

As the Brotherhood of the Serpent race to find the seals before a rare lunar eclipse over the heart of Jerusalem, ARKANE agents Morgan Sierra and Jake Timber battle to find them first.

But this time, evil threatens to destroy all that Morgan loves and she must wrestle an apocalyptic foe as well as fighting to conquer her own fears.

In a fast-paced adventure from the ruins of Iraq to the snake-handling churches of the Appalachian Mountains, from archaeological digs in Israel to the tombs of Egypt, Morgan and Jake must find the seven seals and stop the resurrection of an evil as old as mankind.

An evil that will usher in the End of Days.

End of Days is Book 9 in the ARKANE action adventure thriller series, but can be read as a stand-alone story.

End of Days: An ARKANE Thriller Book 9

An ancient prophecy. An occult secret. The power to raise the dead. 

When a long-hidden tomb and a body covered in Voodoo symbols are found in New Orleans, ARKANE agent Jake Timber discovers a mystery that stretches back to the Spanish Empire and the bloody dungeons of the Inquisition.

But he is not the only one who seeks the Hand of Ezekiel. A shadowy billionaire, backed by those who seek immortality at any price, will stop at nothing to find the relics that can turn bones to living flesh.

When disaster strikes in the heart of the Louisiana bayou, Jake calls on ARKANE agent Morgan Sierra to help him once more as they race against time across the outposts of the Spanish Empire. From Madrid and Toledo to the Philippines, Peru, and on to New Orleans and San Francisco, can Morgan and Jake find the relics and stop the resurrection of the dead?

A page-turning archaeological thriller with elements of the supernatural and occult, Valley of Dry Bones blends religious mystery with Indiana Jones-style action adventure. Valley of Dry Bones is book 10 in the ARKANE action adventure thriller series, but can be read as a stand-alone novel.

Valley of Dry Bones: An ARKANE Thriller

An ancient manuscript that leads to the Garden of Eden. A seed that can restore the world to nature… but only by destroying humanity in its wake.
When a fragment of an ancient manuscript is stolen from a Jewish library in Amsterdam, ARKANE agents Morgan Sierra and Jake Timber discover a conspiracy that stretches back to the days of the Portuguese Empire, and a hidden Order of monks who have protected Eden for generations.

Meanwhile, a radical ecological group seeks the powerful Seed at the heart of the Garden intending to restore the world to its natural state with no thought of the consequences for humankind.

From Lisbon to Macau, the Caribbean and on to Brazil, Morgan and Jake must hunt for the fragments of the manuscript and find their way to the Garden of Eden before those who wish to turn its secret into blood.

Tree of Life

A supernatural relic. A thousand-year-old conspiracy. A madman who turns death into art. It's all in a day's work for the agents of ARKANE.
When a priceless relic disappears from Canterbury Cathedral, ARKANE – the agency tasked with protecting the world from supernatural adversaries – fears the worst… and sends its best.

Now, ARKANE agents Morgan Sierra and Jake Timber are on the job. Across Europe, through historical cities and into spectral forests forgotten by time, Morgan and Jake will follow the bloody trail of hidden relics wherever it leads, whatever the cost.

But even they aren’t ready for what’s coming. 

Their hunt will lead them beyond danger, beyond darkness to the shadowed heart of a hidden citadel where lives an evil unlike any they’ve ever seen… and to a dark choice that will change them both forever.

NY Times and USA Today bestselling author J.F. Penn invites you to brave her most thrilling adventure yet. A world of the strange. A world of the supernatural. A world… of the ARKANE.

Tomb of Relics

A desperate quest. A holy relic. The clock is ticking.
When a mysterious relic is stolen from a museum in Vienna, ARKANE agents Morgan Sierra and Jake Timber embark on a deadly race against time to recover the legendary Spear of Destiny — the holy lance that pierced the side of Christ.

As they follow clues through Nazi ruins, Tibetan temples, and Washington, DC’s greatest monuments, they uncover a sinister plot that threatens to unleash an unstoppable darkness upon the world.

But Morgan also carries a curse in her veins, a shadow placed upon her that now threatens her niece’s life. To save her, Morgan must find the Spear and unlock its fabled healing powers. Standing in her way is the fanatical Jericho Command and their elite leader, Gabriel, a man both blessed and burdened by strange powers and a mysterious past.

From the ashes of World War II to the mystical peaks of Tibet, from ancient crypts to the hallowed halls of the Library of Congress and the Capitol, Morgan and Jake must brave every danger, solve each puzzle, and face down enemies both human and demonic in their quest to find the Spear before its terrible power is unleashed.

Time is running out and the fate of the world hangs in the balance — will Morgan and Jake prevail or will the forces of darkness triumph?

From New York Times and USA Today bestselling author J.F. Penn comes a gripping and explosive thriller that delves deep into the heart of an ancient mystery and a chilling supernatural evil. An unputdownable story of supernatural suspense, Spear of Destiny is a rollercoaster ride into the dark legends of the past and the shocking evils of the present, with only a cursed relic lying between salvation and damnation.
This is book 13 of the ARKANE action adventure thriller series, but it can be read as a stand-alone story.

ARKANE Thrillers - The book series

ARKANE Thrillers - The book series

ARKANE Thrillers books in order

Listen and read