Assassin's Creed: The Engine of History

Assassin's Creed: The Engine of History
The covers to the Engine of History novels are red and blue with historical elements.

The Magus Conspiracy was published in 2022 and The Resurrection Plot was published in 2023, both from Aconyte Books. They're a little over 300 pages. Edited by Gwendolyn Nix and by Marc Gascoigne.

The Magus Conspiracy:

London, 1851 – When Pierrette, a daring acrobat performing at the Great Exhibition, rescues the mathematician Ada Lovelace from a gang of thugs, she becomes immersed in an ancient feud between Assassins and Templars. Pierrette’s only ally is Simeon Price, Lovelace’s childhood friend, who belongs to a Brotherhood devoted to free will.

Available in audiobook, paperback and ebook from Aconyte Books, your local bookseller (mine is Perfect Books) or from WaterstonesIndigoAmazon CanadaAmazon UKAmazon USBarnes & NobleBookshop, or wherever you buy books.

You can watch an interview with me about the book as part of this showcase of Assassin’s Creed stories in various media.

The Magus Conspiracy is a vast adventure that leaps through mid-19th century Europe with excitement, flair and boundless energy. Whether you’re already familiar with Assassin’s Creed or are new to their world, Kate Heartfield expertly weaves their story into the tapestry of known history.” — Phoebe Barton, author of The Luminous Underground


“A rich, fun, and engrossing mix of franchise lore and Victorian-era history, Kate Heartfield brings her trademark brilliant and thrilling storytelling to Assassin’s Creed. The Magus Conspiracy sings with equal parts witty characters, series stealth, and historical intrigue. A must-read for every Assassin’s Creed fan.”

— Mike Chen, New York Times bestselling author of Star Wars: Brotherhood.


A sumptuous thrill ride with characters who’ll steal your heart. Another not-to-be-missed book by Kate Heartfield!”

— Marie Bilodeau, award-winning author of The Guild of Shadows



The Assassin-Templar war that is so familiar through the Assassin’s Creed franchise is brought forth in new and inventive ways, with Heartfield nailing the assignment in every single chapter… It fits perfectly into the genre of action-adventure video games for which the book is written. My heart was pounding through every fight scene, in utter awe at every beautiful literary skyline.

– The Nerdy Archer

The Resurrection Plot:

Cairo, 1869. When a bomb goes off at the Khedivial Opera House celebrating the opening of the new Suez Canal, visiting Assassin Pierrette Arnaud investigates, only to uncover a plot to eradicate free will… To her surprise, her old friend and teacher Simeon Price arrives in Egypt on the same trail, seven years after they allied to stop the Templars in London. But there’s no time to reminisce as the Templars maneuver Europe and Africa like pieces on a chessboard, wreaking havoc on a global scale.

As Simeon and Pierrette race to stop further attacks, they unearth plans suggesting a mysterious tower is the key to the ultimate Templar takeover… and with the puzzling Engine of History in their grasp, the Assassins might be outmatched at last.

Kate Heartfield continues her tale of intrigue, action, and clever misdirection begun in The Magus Conspiracy. The Resurrection Plot spans decades as it sets up the trilogy’s finale with brisk pacing, engaging characters, and a climactic plot twist that cuts right back to the beginning of the previous book. Heartfield’s keen eye for historical detail makes it easy to believe Assassins and Templars really have been pulling the strings to shape our future. I can’t wait to see how she wraps it all up in the final installment.
— Leo Valiquette, author of Bane of All Things
The best way to get to know a city was to climb its highest buildings, or so he’d been taught…” Unless you’re taking an exquisitely detailed tour of some of the world’s greatest cities, hot on the heels of assassins and their quarry in Kate Heartfield’s latest, ASSASSIN’S CREED: THE RESURRECTION PLOT. Heartfield uses her vast expertise and love of history to transport readers to citiscapes so real, you’ll believe you’re there, all while setting the stakes higher than ever for her characters. You’ll love this one!
– Julie E. Czerneda, author of To Each This World