Audiobook Narrator

Let’s tell your story

About Mary

Mary began narrating and publishing audiobooks in 2016. A multi-published author of romantic comedy and mystery, she found a new avenue of bringing characters to life with distinct accents and attitudes. Debra Holland, NYT & USA Today best-selling author of the Montana Sky series and founder of Montana Sky Publishing, recruited Mary to narrate and produce the Harper Ranch historical western romance series available on Audible.

Mary’s expressive, versatile voice invites listeners into a story with a well-timed joke or a new idea that inspires them to see their world from a new perspective. Her experience as an author and journalist brings a natural sense of timing that heightens tension or gives a moment of relief until the action ratchets up again. Her curiosity and sense of exploration make her an engaging companion for listeners interested in spiritual self help, memoir, spirituality and Christian topics.

As an author, she understands more than most the emotional and financial investment a writer makes when entrust a producer with their book. She does her due diligence through research and works closely with her authors to ensure that she understands and translates their voice and vision into the audiobook. Mary can also provide direction in marketing the audiobook and building a listenership through online book tours, ads and social media.

Mary is available to work with independent authors and publishers directly or through ACX & Findaway Voices.

She can be reached at:


“I received many auditions, and I chose Mary Castillo to narrate as I immediately felt she captured the spirit of the book. It was not an easy task: a lengthy volume with many characters from different places. Her accents, intonations and interpretation of them were brilliant, and she brought the book to life. Mary always read with cognizance of the scene and presence. The tone, pace, rhythm and style were just right. I was so delighted with the reading that I asked her to work with me again on another project! The quality audio recording was excellent, and any requested modifications made to the narration were done swiftly and perfectly.”

– Faiz Ahmad, Book Studio


Undiscovered Country: A Spiritual Adventure by Kathryn Hulme (Nonfiction – Memoir – Spirituality)

Stardusted – A Frankie Franklin Hollywood Mystery by Deb McCaskey (Mystery – Historical – Amateur Sleuth)

Rye’s Reprieve Montana Sky Series – Harper Ranch Book 1 by Louella Nelson  (Historical Romance – Western)

Girl in the Mist – A Dori O. Paranormal Mystery by Mary Castillo (Mystery – Paranormal – Female Detective)

Lost in the Light – A Dori O. Paranormal Mystery by Mary Castillo (Mystery – Paranormal – Female Detective)

Coming Fall 2020:

Gurdjieff and the Women of the Rope by Solita Solano and Kathryn Hulme (Nonfiction – Memoir – Spirituality)

Included in Christ: Scripturally unraveling the apparent incongruity between gay Christians and the Church’s belief in “one man, one woman by Cristy Perdue (Nonfiction – Christian -LGBTQ)

Coming Winter 2020:

Life Reboot: An Inner Wisdom Guide to Finding Your Passion and Purpose by Sarah Wall (Nonfiction – Spiritual Self Help – Meditation)

Rebel Love Song Montana Sky Series – Harper Ranch Book 2 by Louella Nelson (Historical Romance Western)


Historical Cozy Mystery – Female Amateur Sleuth

Historical Mystery

Nonfiction – Spiritual Memoir

Historical Western Romance – First Kiss

Voice Over Radio Commercial

Voice Over Travel TV Commercial


Winner of the ABR Listener’s Choice Award in Mystery

2019 Society of Voice Arts & Sciences Audition Spotlight Finalist

Daphne du Maurier Award for Excellence in Paranormal Mystery Nominee


Mary Castillo and is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to