Walker Kane didn't believe in monsters ... Until they took his daughter. Beneath the streets of Edinburgh, an ancient evil waits. Each year, the Grendsluagh—a prehistoric monster of insatiable hunger—demands a human sacrifice in exchange for the city's continued prosperity. A secret society known only as the Cabal has overseen this sinister ritual for centuries, binding Edinburgh to a grim legacy of terror.When ex-military search and rescue officer Walker Kane's estranged daughter Emily is taken to sate the Grendsluagh's appetite, he plunges into a race against time through a treacherous underworld of danger.Aided by a mythology-obsessed librarian and a daredevil urban explorer with secrets of her own, Walker and his makeshift team must face nightmares at every turn to reach Emily before she is devoured. The deeper they delve into Edinburgh's serpentine catacomb, the more their resolve is tested—by the mutated...

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. The ARKANE action-adventure thriller series in order. The books can also be read...

How far would you go to see again? Conflict photographer, Sara Miles, loves being embedded with the military out in the desert. Her pictures pay tribute to those who fight, suffer, and die for freedom and the images she captures can turn public perception in the never-ending war.Her photography matters. But when Sara is caught in an explosion out on patrol, her eyes are damaged by a face full of shrapnel. She may never be able to see through a lens again.The military offers her a cutting-edge operation to restore her sight, but it comes with a price ... A short story with a supernatural edge from award-nominated, USA Today bestselling thriller author, J.F. Penn.

LONDON. When the body of a young heiress is found within the Royal College of Surgeons, Detective Sergeant Jamie Brooke is assigned to the case. An antique ivory figurine found beside the body is the only lead and she enlists Blake Daniel, a reluctant clairvoyant, to help her discover the message it holds. When personal tragedy strikes, Jamie finds her own life entwining with the morbid fascinations of the anatomists, and she must race against time to stop them claiming another victim. As Jamie and Blake delve into a macabre world of grave robbery, body modification, and the genetic engineering of monsters, they must fight to keep their sanity, and their lives.

A map of skin etched in blood. A world under threat from the Borderlands. A young woman who must risk the shadows to save her family. ** From award-nominated, New York Times & USA Today bestselling author, J.F.Penn ** When her Grandfather is murdered under mysterious circumstances, Sienna Farren inherits his map shop in the ancient city of Bath, England. Once there, she discovers that her family is bound up with the Ministry of Maps, a mysterious agency who maintain the borders between this world and the Uncharted. With the help of Mila Wendell, a traveller on the canals, Sienna discovers her own magical ability and a terrifying place of blood that awaits in the world beyond. But when she discovers a truth about her past and the Borderlands begin to push through the defenses, Sienna must join the team of Mapwalkers on their mission to find the Map of Shadows – whatever the cost. In a place written out of...

An ancient manuscript that leads to the Gates of Hell. A woman’s revenge for the death of her father. When the last of the Remnant is murdered at the Sagrada Familia in Barcelona, ARKANE agent Dr Morgan Sierra is drawn into the hunt for a supernatural Key. She's joined by agent Jake Timber, who must face his own fears as they decipher clues left behind by Kabbalist scholars. From ancient sites in Spain, to Israel and the Czech Republic, Morgan and Jake must follow the trail to the Key, while evading Adam Kadmon, a man consumed with a lust for dark power. As the planets align, Morgan and Jake race against time to find the Key and destroy it before the Devourers and the Polluted of God emerge from the Gates of Hell to ravage the earth.

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.Dr Morgan Sierra, psychologist and ARKANE agent, finds herself trapped inside the synagogue with Zoltan Fischer, a Hungarian Jewish security advisor. As the 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 features Dr Morgan Sierra from the ARKANE thrillers, but is a stand-alone novella and can be read separately from the ARKANE series.

New York City is built upon a dark secret. If this knowledge falls into the wrong hands, the city will crumble. From New York Times and USA Today best-selling author J. F. Penn... When a woman is crucified on a burning cross in downtown Manhattan, it marks the beginning of a dangerous crusade. The Confessors seek the powerful relic of a dark angel, and they will stop at nothing to get it. ARKANE agent Jake Timber is in New York to investigate the 11th-century Cloisters Cross alongside Naomi Locasto, a linguist, when they become entangled in the mystery. As his past threatens to overwhelm him, can Jake find the relic of the angel before the Confessors destroy the city? This is book 7 of the ARKANE supernatural thriller series, but it can also be enjoyed as a standalone novel.  

“Those who the Gods wish to destroy, they first make mad.” LONDON. When a prominent psychiatrist is found murdered in the old hospital of Bedlam, Detective Sergeant Jamie Brooke finds herself investigating the history of madness to fathom the motive. Blake Daniel, a reluctant psychic, helps her to research the case, only to discover that his own family are entwined with the shadowy forces that seek to control the minds of the mad. As the body count rises, and those she loves are threatened, Jamie discovers that the tendrils of conspiracy wind themselves into the very heart of the British government. Can she stop the killer before madness takes its ultimate revenge? A thriller with an edge of the supernatural, Delirium is a story of love for family, revenge for injustice and the question of whether we all sit on the spectrum of madness somewhere.

When Neo-Viking terrorists invade the British Museum in London to reclaim the staff of Skara Brae, ARKANE agent Dr. Morgan Sierra is trapped in the building along with hostages under mortal threat.   As the slaughter begins, Morgan works alongside psychic Blake Daniel to discern the past of the staff, dating back to islands invaded by the Vikings 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.  

A power kept secret for 2000 years. A woman who stands to lose everything. India. When a nun is burned alive on the sacred ghats of Varanasi, and the stone she carried is stolen, an international hunt is triggered for the relics of the early church. Forged in the fire and blood of martyrs, the Pentecost stones have been handed down through generations of Keepers who kept their power and locations secret. Until now. The Keepers are being murdered, the stones stolen by those who would use them for evil in a world transformed by religious fundamentalism. Oxford University psychologist Morgan Sierra is forced into the search when her sister and niece are held hostage. She is helped by Jake Timber from the mysterious ARKANE, a British government agency specializing in paranormal and religious experience. Morgan must risk her own life to save her family, but will she ultimately be betrayed? From ancient Christian sites in Spain, Italy and Israel to the far reaches of Iran and Tunisia, Morgan and Jake must track down the stones through the myths of the early church in a race against time before a new Pentecost is summoned, this time powered by the fires of evil. The first in the ARKANE series, PENTECOST is a fast-paced thriller that explores the edges of faith against a backdrop of early Christian history, archaeology and psychology.

Who is the sinner and who is the saint? LONDON. When the body of a priest is found in the ruins of Winchester Palace, his tattooed arms flayed, his mouth stuffed with feathers, the alternative community of Southwark huddle in fear. Private investigator Jamie Brooke begins the hunt for the murderer aided by Blake Daniel, a psychic researcher, who is haunted by visions of the past. As violence erupts, leaving a trail of bodies in its wake, Jamie and Blake must find the skin collector before those they love are taken down. A crime thriller with an edge of the supernatural, Deviance is the story of a struggle for power against the backdrop of London.

An ancient weapon threatens the heart of India. From New York Times & USA Today bestselling author, J.F.Penn. A bomb explodes in the center of London and a fragment of an ancient Hindu sculpture is stolen from the ARKANE Headquarters by a secret organization bent on mass murder. If the sculpture is put together again, it will reveal the key to the Brahmastra, a weapon with the power of a nuclear explosion. As those they love are threatened, ARKANE agents Morgan Sierra and Jake Timber must search for the pieces of the relic before it can be activated at the Kumbh Mela, the greatest pilgrimage on earth. In a fast-paced adventure from the slums of Mumbai to the temples of Kolkata, the Taj Mahal in Agra to the killing fields of Rwanda, Morgan and Jake must find the pieces of the sculpture before it’s too late. Destroyer of Worlds is Book 8 in the ARKANE action adventure thriller series, but can be read as a stand-alone story.

The prophecy in Revelation declares that a quarter of the world must die and now a shadowy organization has the ability to fulfill these words. Can one woman stop the abomination before it's too late? ISRAEL. A victim of Jerusalem Syndrome jumps to his death from the top of the Western Wall, his body smashed on the ancient stones. Another disembowels himself under the scrawled figure of the Pale Horse of the Apocalypse with the chilling words, "God told me to do it." Dr Morgan Sierra, specialist in psychology of religion, travels to Israel to investigate the deaths and becomes embroiled in an international conspiracy that will use cutting-edge technology to carry an ancient curse to mankind. She joins agent Jake Timber at ARKANE, a secret government agency investigating the supernatural and together they hunt down the Devil's Bible, pursued all the way by the evil forces of Thanatos. From the catacombs of Paris to the skeletal ossuaries of Sicily and the Czech Republic, Morgan and Jake must find the Devil's Bible and stop the curse being released into the world before one in four are destroyed in the coming holocaust. Because in just seven days, the final curse will be spoken and the prophecy will be fulfilled.