Current Projects

A person in a suit standing on a rocky hilltop, gazing towards a distant town with winding roads, under dark, stormy clouds, with a quote about secrets and shadows at the top of the image.

The Shape Inside

A psychological thriller blending small-town mystery, conspiracy, and supernatural horror. (Currently in revision)

When Dr. Wesley Hawthorne returns to the isolated town where his parents disappeared, a murdered young man, a vanished friend, and a community bound by unsettling rituals force him to question everything he thought he knew about Atherton—and whether anyone there is truly who they seem.


Current Projects

A person walking down a foggy, tree-lined path at dusk or dawn, with the silhouette of a house in the distance and bare trees overhead.

Blackwater Murders

What Walked the Boreen - Book 1 (Currently in Revisions)

The Hare’s Wound - Book 2 (Draft in progress)

Grey Castle - Book 3 (Draft in progress)

Inspired by Irish folklore and the landscapes of County Kerry.

What Walked the Boreen - When Ria Brennan inherits a lonely farmhouse on Ireland’s Dingle coast, she expects a fresh start—not a murdered girl, a village haunted by the legend of the Woman in Black, and a trail of disappearances tied to the land beneath her feet. As the old legend of the Woman in Black gives way to whispers of a newer terror—Ria discovers both stories were crafted to conceal the same terrible truth. With suspicion closing in and the people she trusts hiding more than they reveal, she must uncover who is using the legend before the next disappearance becomes her own. Based on the Irish folk tale The Woman in Black.

The Hare’s Wound - Seventeen years after her sister’s death, Aisling returns home to uncover the truth buried beneath a town’s oldest legend—before its silence claims another victim. Inspired by the Irish folk tale The Hare Stone.

Grey Castle - When a Garda Roisin O’Dell returns home to investigate a long-buried disappearance, she uncovers a conspiracy—and a town willing to kill to protect it. Inspired by the Irish folk tale Minard Castle.

Novels in Development

Every novel begins with a mystery. Some are rooted in forgotten folklore, others in isolated towns or extraordinary circumstances, but each explores the choices people make when confronted with the unknown. These are the projects currently in development.

A young boy holding a dog in a dark, foggy forest with trees in the background. The boy has messy hair and a serious expression.
A man with his dog standing on a hill overlooking a suburban neighborhood at sunset or sunrise with a sky filled with clouds.

Welcome to Heartland

Stay Hidden

A dark, misty forest scene with a large tree in the center that has red markings resembling blood. The title "The Five" is overlaid at the top and the author's name "Loni Sullivan" at the bottom.
Book cover titled 'The Jols Are Crushed' by Loni Sullivan. It features a black background with pink neon lights reading the title at the top. The cover shows three drag queens in glamorous costumes with exaggerated wigs and makeup, surrounded by crime scene tape, and a small dog in a festive sweater sitting in front of a high-heeled shoe, a glass of wine, and a candle.

The Five

The Jools Are Crushed

When the world goes silent and the monsters come hunting, a terrified boy and his dog must stay hidden—or lose everything they have left. A continuation of The Shape Inside world.

When a beloved drag queen dies beneath the glittering lights of The Mirage, a found family of fabulous suspects must solve the murder before their next performance becomes their last.

Ian thought Heartland was offering him a better life—until he discovered he had been brought there to be harvested, and that escaping might mean leaving everyone else behind.

In a town haunted by five vanished boys, a teacher seeking refuge discovers a fresh body—and must confront the secrets and buried trauma that followed her to Myrtle.