The Oxford Key Mysteries: Complete Cozy Fantasy Mystery Series

by Lynn Morrison

Natalie Payne thought her new cat was adorable. Turns out he's a four-hundred-year-old wyvern with a cheddar addiction and a tendency to set things on fire when he sneezes. Welcome to the magical side of Oxford.

When event planner Natalie Payne accepted a job at the University of Oxford, she expected historic architecture and academic tradition. She didn’t expect to inherit a snarky gargoyle-turned-wyvern named Humphrey or a sacred duty to protect the city’s failing magical boundaries.

From the ivy-covered walls of St Margaret College to the shadowed archives of the Bodleian and out into the rolling hills of the Cotswolds, Nat must navigate a secret world where portraits glare, ghosts offer unsolicited advice, and ancient artefacts hold the key to the city's survival.

But magic isn't her only complication. To solve the murders haunting the spires, Nat must team up with a local professor who is as handsome as he is infuriatingly stoic. As they work together to unmask killers, a slow-burn attraction begins to simmer—even if his grumpy demeanor is constantly at odds with her sunshine optimism.

With a high-stakes event always on the horizon and murderers on the loose, Nat, her fire-breathing companion, budding love interest, and a found family must solve self-contained mysteries while uncovering the truth about the magic in Nat's own bloodline.

Can one determined woman and her eccentric team of "Eternals" restore the magic of Oxford before it vanishes forever?

Why you'll love this

✨ Cozy Fantasy Low-stakes magic and high-stakes galas.

🐉 Sass & A snarky wyvern with a serious cheese problem.

☀️ Grumpy x A slow-burn romance with a broody detective.

🏛️ Magical Talking portraits, helpful ghosts, and Oxford secrets.

🇬🇧 British Sweeping Cotswolds views and tea-fueled sleuthing.

🏠 Found A tight-knit crew of librarians, historians, and spirits.

This omnibus includes the complete 7-book series of whimsical cozy fantasy

Murder at St MargaretBurglary at BarnardArson at the AshmoleanSabotage at SomersetPost Mortem at PaduaHomicide at Holly ManorThe Eternal Investigator

1586 pages, Kindle Edition

Published January 11, 2026

About the author

Lynn Morrison lives in Oxford, England and Venice, Italy with her husband, two daughters and three cats. Originally from the US, she has also lived in Italy, France and the Netherlands. It’s no surprise then that she loves to travel, with a never-ending wishlist of destinations to visit. She is as passionate about reading as she is writing, and can almost always be found with a book in hand. You can find out more about her on her website LynnMorrisonWriter.com.

You can chat with her directly in her Facebook group - Lynn Morrison’s Not a Book Club - where she talks about books, life and anything else that crosses her mind.

Reviews

[Cheryl Davis · Rating 5 out of 5]

I really enjoyed these books. I like the idea of magic and how it works. I like the main story of how Natalie Payne finds her way there, the connection of family and the people she meets. She falls in love with Edward and has help from the other two prefects who are the liaison between mortal and magic with whom she builds a solid connection help bring in more people. The books grow and adapt, H the naughty Wyvern is hilarious and the deaths are a good excuse to poke around and make use of Eternals and the myriad of creatures and ghosts who make up the Eternal population. They even make it to Italy and back.

Each of the stories follow on and are fun to read.

[Hilary Franklin · Rating 5 out of 5]

Brilliant

Having read the whole series now, it was great. Each book followed on well from the previous and each character had a chance to shine. I was born in Oxford so know the town and colleges well. It was great to read about the eternals and,their relationship with the colleges. Will look forward to reading more from this author.

[Cheryl Johnston · Rating 5 out of 5]

Outstanding Series

All the characters in this series make it Fantastic! I truly enjoyed reading all the books. I just wish there were more. There seemed to be more to say about all the characters. Weddings etc……I’m hoping for more 🤩

[Huldie · Rating 5 out of 5]

Great Series

I was captivated from the first chapter of the first book. Not ghosts but Eternals? A cheese loving wyvern masquerading as a cat? Who cou!d imagine Oxford hiding so many secrets? Lynn Morrison has written these delightful stories.

[Michelle Marshall · Rating 5 out of 5]

Delightful Read!

I adore the backdrop of Oxford and the depth of the characters. The plot twists are clever and engaging. The romantic thread is not overwhelming so as to distract from the mysteries. And a mischievous and loyal wyvern is the cherry on top!

[SusanR · Rating 5 out of 5]

Binged the Whole Series

It was nice to read the series from the beginning to hopefully not the end. Entertaining and interesting. Liked the characters and the Colleges of Oxford as the setting.

[Ker_Thwap · Rating 3 out of 5]

A bit insipid, slow, and a poor mystery. Like the genre, not this book.