J. F. Penn

Evil stalks the city of London at night. Can Detective Jamie Brooke and reluctant psychic Blake Daniel stop the murders before it's too late....

In mid-2020, I was not okay—and I didn't know how to find my way out of that darkness. But I could put one foot in front of the other until I figured it out....

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.

Jamie Brooke is working as a private investigator in the London Borough of Southwark when the body of a priest is found in the ruins of Winchester Palace, his tattooed arms flayed, his mouth stuffed with feathers....

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.

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.

When personal tragedy strikes, Jamie has nothing left to lose and she must race against time to stop the mysterious Lyceum claiming another victim....

As earthquakes shake the land and volcanoes erupt on the Pacific Rim of Fire, Ben wrestles with his Maori heritage as he faces the supernatural powers that threaten the land of Aotearoa....

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.

An agent of Arkane, the British agency tasked with protecting the world from supernatural crises, Morgan knows that giving up the staff could spell the end of all things....

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....

Devastated by grief after the death of her daughter, Detective Sergeant Jamie Brooke returns to investigate the murder of a prominent psychiatrist in the old hospital of Bedlam in London....

When her Grandfather is murdered under mysterious circumstances, Sienna Farren inherits his map shop in the ancient city of Bath, England. She discovers that her family is bound up with the Ministry of Maps, a mysterious agency....

When a fragment of a deadly map is recovered from a medieval plague pit in London, the Mapwalker team must cross over into the Borderlands, once more....

As natural disasters sweep Earthside, a mutant army rises in the Borderlands, driven by the dark force behind the Shadow Cartographers. Sienna and the Mapwalker team must use the Map of the Impossible to journey through the realm of the dead and face the nightmare at its heart....

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.

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.

A place written out of history. A world off the edge of the map. In this fantasy adventure trilogy, Sienna and the Mapwalker team must defend Earthside from the invasion of the Borderlanders and face their darkest challenge against the Shadow....

Some secrets should stay buried. When renowned architect Arania Webb returns to Bristol Zoo—once her childhood sanctuary but now a derelict ruin—she discovers her late father’s hidden underground lab, which harbors a dark obsession....

When the mutilated corpse of a wealthy author is discovered, the police officer sent to investigate finds a curious diary amongst the occult objects at the scene. Will he uncover the author's secret at the ruined chapel? Plus two more short stories....