Tyffany D. Neiheiser

Tyffany writes speculative YA thrillers and short stories. She is passionate about mental health and self-acceptance, so those themes tend to find their way into her stories.

She has a Master’s Degree in Mental Health Counseling, and she has worked as a counselor for people with both mental health and substance abuse challenges. She has also spent three fantastic years as a crisis counselor helping people struggling with suicidal or homicidal ideation. Her internship was with a hospice, providing grief counseling to people who were dying and people who experienced a loss. These experiences have shaped her stories.

Her favorite things in life are her dogs, her cats, reading, writing, and hiking.  

Find Tyffany on her website, or follow her on Twitter @Writer_Tyffany.


  • Standalone
    Not Dead Enough
    Tyffany D. Neiheiser



Not Dead Enough
"This fast-paced thriller is an exploration of the ripple effects of trauma and abuse and how the unspoken past can rise up and haunt the present...the steady buildup of Charlotte’s frustration and fear will keep readers turning the pages."


"[T]he pacing makes for a riveting page-turner with genuinely scary and nerve-wracking scenes.... Goosebump-inducing and thought-provoking"


"The plot builds with increasingly chilling tension while still tending to the emotional heart of the story [...] an unsettling story of the unseen hauntings of trauma and violence."

The Bulletin of the Center for Children's Books

"[C]onjures genuine terror while delving into the complexities of grief and cycles of abuse.... a harrowing and fresh foray into the thriller genre."

Publishers Weekly

"NOT DEAD ENOUGH is an impressive thriller debut that starts with a punch and keeps readers engrossed until the very last pages."

Fresh Fiction

"Whether or not you believe in ghosts, Not Dead Enough deals movingly with what it takes to heal from past abuse and the shades of those who linger on in our memories, causing pain instead of evoking warmth and love. Tyffany D. Neiheiser is definitely a writing talent to watch."

Criminal Element

"A gripping thriller that had me racing to the end. A story of past trauma, this book is heartfelt, timely, and relevant, all while being a real page-turner."

Kirsten Perrin, author of How to Solve Your Own Murder