Marlena Cannon
Matthew Lett
Publication date: September 23rd 2025
Genres: Adult, Cozy Mystery, Fantasy

A fantasy mystery with hooves and heart.

Simarron isn’t a detective, he’s just a centaur with a clipboard and a nose for trouble. He left his homeland to get a professional job in the city as a magical safety inspector. However, his new life isn’t quite as he imagined it to be and his fellow housemates at Slant Row Boarding House (which is definitely not haunted) are shadier than an enchanted forest.

When a castle disappears and an alchemist ends up dead, Simarron must choose between the cozy, safe rule-bound life he’s always dreamed of and the principles that won’t let him walk away. He is a safety inspector, after all, and the city isn’t safe with a killer on the loose.

A cozy mystery set in a richly imagined gaslamp fantasy world, The Vanishing Castle delights with magical intrigue, a quirky found family, and a centaur sleuth you won’t soon forget.

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EXCERPT:

So, you want to be a magical safety inspector?

Checking my pocket watch, I scuffed the moisture off my hooves as I entered the brick building. Inside, a framed newspaper article announced the founding of the Magic and Alchemy Safety and Health Administration just ten years ago. But the smell of dust, lamp oil, and crumbling paper told a different story, one far older. I caught a dim reflection of myself in the glass—enough to see that my auburn mane looked presentable—but I smoothed it down anyway while I waited.

My gaze restlessly traveled the shelves containing old books and magical oddities, including a globe of the world adorned with dynamic swirls of clouds that flowed over the model. The morning light streamed in from a pair of narrow, floor-to-ceiling windows, brightening the dark wood and heavy silence of the interior.

I glanced at my pocket watch again—one minute until my appointment. Inconveniently, the desk positioned outside the director’s office was unoccupied. Not a secretary in sight. Oh, no—they didn’t expect me to interview for a secretary position, did they?

An indistinct figure moved beyond the glass-paneled door. I shifted from hoof to hoof. What was I to do in this situation, knock or wait one more minute?

By the time I worked up the nerve to announce my presence, two more minutes ticked by. Dread slid its icy fingers into my chest, warning me that I was now late, and gave me the final push to act.

I reached forward to knock, pausing when I heard footsteps shuffle to a halt on the other side. I backed up awkwardly, my hooves clattering on the wood floor as the door swung outward.

“Hello, you must be Simarron! I’m Ken Moosekind, Executive Director of MASHA,” said a squinty man with a bushy mustache whose robes smelled faintly of tobacco. “Come in, lad, and mind your head.” He retreated behind his cluttered desk.

I ducked my head slightly, entering the office: a place of organized chaos. Books and files sat piled atop cabinets and shelves—even on the floor. Wood scraped on wood as I moved aside a chair and settled down on my haunches opposite the director.

Director Moosekind shifted a stack of papers aside. “So, Simarron, you want to join MASHA as a magical safety inspector, do you?”

 

Author Bio:

Marlena Cannon grew up reading “The Cat Who…” mysteries by Lilian Jackson Braun and writing stories of her own. She kept writing intermittently over the years, eventually pursuing her dream by completing the DIY MFA program in 2023, where she drafted “The Vanishing Castle,” inspired by one of her childhood projects. She also designed the cover using her background in graphic design. Marlena lives with her husband and their rescue rabbits.

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