ARKANE Thriller Bundle: One Day in Budapest #4, Day of the Vikings #5, Gates of Hell #6
ARKANE Thriller Bundle: One Day in Budapest #4, Day of the Vikings #5, Gates of Hell #6
ARKANE Thriller Bundle: One Day in Budapest #4, Day of the Vikings #5, Gates of Hell #6

ARKANE Thriller Bundle: One Day in Budapest #4, Day of the Vikings #5, Gates of Hell #6

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Three more thrillers in the ARKANE series described by readers as "Dan Brown meets Lara Croft."

One Day in Budapest #4 (novella)

Nationalistic fervor. Genocidal violence. The first time, the world went to war. This time, the world could end.

When a priest is murdered and one of the holiest relics of Christendom stolen, the ultra-nationalist Eröszak group is ready.

Fanning flames of hatred into a firestorm of anti-Semitic violence the likes of which haven’t been seen since the darkest days of World War II, Eröszak’s leader has the perfect plan to turn Hungary — and later, the world — into a nightmare of fascist rule.

They’ve planned for every option, for every eventuality… except one: Dr. Morgan Sierra, agent of ARKANE.

Morgan didn’t intend to get involved — she was just in Budapest to deliver a pair of artifacts to the historic Dohany Street synagogue. But when Eröszak’s thugs attack, Morgan finds herself the only thing standing between them and the overthrow of an entire government.

Nazi fanaticism, religious relics, and the blood of innocents combine to create a mystery fit for an agent of ARKANE — the British agency tasked with the uncovering of and defense against the supernatural.

And Morgan knows that she only has one chance to stop Eröszak and its leader. Because if she doesn’t, history may well repeat itself — only this time, the forces of darkness will win.

Based on true events, One Day in Budapest is the fourth standalone thriller in New York Times and USA Today bestselling author J.F. Penn’s ARKANE series. Grab your copy to find out what the buzz is about, and get ready for the dark, the disturbing… the ARKANE.

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Day of the Vikings #5 (novella)

She has been called many things: murderer, madwoman, monster. She will become only one thing: a god.

The Crone. A woman of legend, a creature of blood. A Valkyrie. She has tortured, murdered, maimed — performing all the rituals needed to call forth the power of Odin himself and summon Ragnarok. She just needs one more thing: the staff of Skara Brae, and her plans will be fulfilled.

But the staff is already in the hands of Morgan Sierra. 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.

Now the Crone has taken dozens of staff members, visitors — even children — hostage at the British Museum, demanding that Morgan turn over the staff. Willing to kill, possessor of powers beyond anything ARKANE has yet encountered, the Crone seems unstoppable. 

Morgan’s only advantages are her wit, her skill… and Blake Daniel (of the best-selling Brooke and Daniel crime thriller series). Cursed with clairvoyance, Blake’s powers may be just enough to help Morgan turn back the Crone and stop the end of the world.

But the Crone has her own secrets. Able to weave illusions, to wield fear, even to call forth the dead Vikings of old. She is the most powerful adversary Morgan has ever faced. But will she be the last?

The Crone beckons. Ragnarok looms. And it is up to Morgan and Blake to deny them both.

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Gates of Hell #6 (novel)

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.

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Print books shipped from my independent printer in the UK, or from the US in summer 2023.

Ebooks and audiobooks are delivered by email through Bookfunnel. Check your email and then download or read/listen on your favorite device.



"Penn's ARKANE series enthralled me from the start, each book delivering a great mix of character, history, religion, mystery and thrills. GATES OF HELL is no exception, drawing the reader into a new level of excitement. I was with Dr. Morgan Sierra during her Red Sea dive, felt her determination to exact revenge, experienced her horror at Hell's Gate. Penn's descriptions have never been better."

I love reading
5 star Amazon review

"The story is riveting as Morgan and her partner Jake Timber follow the clues and try to remain a step ahead of Adam Kadmon, the man trying to unleashed hell's demons ...In my opinion, this is her best book to date, and I look forward to more."

Jane V. Blanchard
5 star Amazon review

"As always Ms Penn has created an adventure that doesn't stop! One thing I love about her writing is how she uses places which she has actually visited in her books. This attention to detail makes her one of my favorite authors!"

5 star Amazon review

"You have to read this book. It is non stop action but also gives the reader some insight into the Jewish religion. It takes you from London to Spain then to Israel and finally to Budapest for an amazing finale. Never disappointed when reading a book by Penn."

Darlene A.
5 star Amazon review

In the ARKANE thriller series ...

ARKANE agents Morgan Sierra and Jake Timber race against time to solve religious and supernatural mysteries around the world.

They're joined by other members of the ARKANE team as they search for clues and battle foes both human and supernatural along the way.

Described by fans as "Dan Brown meets Lara Croft," and perfect for fans of James Rollins or Steve Berry.

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