TJ Nille writes mysteries shaped by a lifelong fascination with the stories people would rather keep hidden. Raised in her mother’s private investigation business, she grew up learning to pay attention to details, follow subtle patterns, and notice when a story doesn’t hold up.

Her background in psychology deepened that training, giving her an insider’s view into what drives people, what betrays them, and what they’ll risk to protect their secrets. She also built a parallel career as a communications strategist and certified coach, helping women, leaders, and organizations find clarity, confidence, and a powerful voice.

Now she brings those twin lenses—investigation and psychology—into fiction, crafting mysteries where motives run deep and truth is rarely simple. Her debut, Rue the Day, launches the Prudence Pritchard Mysteries. A proud member of Sisters in Crime and the Pacific Northwest Writers Association, TJ is, fair warning, the kind of writer who notices things you’d rather she didn’t.