Sisters in Crime OC

How She Become an Audiobook Narrator, and How It Impacted Her Writing

25-FEB-2024 @ 3:00 p.m. @ Book Carnival in Orange, CA


Celebrate the season of love with Sisters in Crime OC Blood Orange Chapter and out why audiobooks are the fastest growing segment of the bookselling market today! February 25, 2024 at 3:00 p.m. at Book Carnival in Orange.

Enjoy delicious snacks, drinks, giveaways, as sought-after audiobook narrator, Mary Castillo, discusses what you need to know about audio books, why and how she became an audiobook narrator and how it changed her own writing!

Today on SCWA Hump Day Book Tour!

Thank you Southern California Writers Association and Maddie Margarita for having me and Author Kristy Tate on the weekly Facebook Live. We had a great time talking about Kristy’s wonderful time travel rom coms and the privilege I have as the audiobook narrator and producer playing in her world.

You can watch our 15-minute chat and learn more about the great community of SCWA! Watch:

Montana Sky World Harper Ranch Series Continues

Book two in the Harper Ranch Series is now available!

Almost a year from book one’s audio release, I’m so excited to announce the series continues with Rebel Love Song! It is an honor to be the narrator for this series of sisters who risk everything to homestead the Montana territory and give their hearts to worthy (and handsome) men.

Gorgeous twenty-year-old Jessamine Harper faces the retribution of an angry government bent on stopping her suffrage writings. The rugged Bethesda Janes, a metalsmith hiding his Jewish heritage and his heartbreaking past, falls in love with the beauty, intelligence, and caring heart he finds in Jess. From urban St. Louis to the prairie and mountains of 1887 Montana Territory, intrigue, jealousy, and ambition bring Jess, Bethesda, and a determined government agent to a dramatic stand-off.

Ms. Nelson’s writing has an elegance that compelled me to turn the pages long into the night,” writes Linda N. Pines, EreaderNewsToday (4.9 out of 5 stars for Book One in the series, Rye’s Reprieve).

Now the adventure and romance continue with the trials and triumphs of Jessamine, the tomboyish, activist middle Harper sister, in Rebel Love Song.

Listen on Audible



New audiobook now on sale

Today, The Divine Marriage: God’s Design for a Rewarding and Fulfilling Relationship by Jessica Rothmeyer, Ph.D. is now available on Audible.

Marriages everywhere are in trouble. Schedules are more hectic, families are complicated, and daily life is lived at a fast-forward pace. How can couples maintain the sanctity of their marriage while holding onto their emotional connection and overall satisfaction with one another?

The Divine Marriage offers both wisdom and practical suggestions on how to live out a biblical marriage – one that is honoring to God and more fulfilling than most couples ever dreamed was possible.

Having a better understanding of your God-given instincts as a man or a woman will lead you to a deeper spiritual awareness for yourself and your partner. These practical skills and step-by-step instructions will lead to increased intimacy, forgiveness, and restored affection for one another. As you are able to demonstrate these vital biblical truths within your relationship, you will surely inspire your family, friends, and even your children as they see all the miraculous changes in your marriage.

PLEASE NOTE: When you purchase this title, the accompanying PDF will be available in your Audible Library along with the audio. 

Add to your Audible Playlist





Mary & Friends to Share Writing Groups at Boca de Oro Literary Festival

If you’re an emerging writer and author, the most important step – other than writing your books! – is to join a supportive writer’s group. I’ll be representing the Orange County Chapter of Romance Writers of America and I gathered up some amazing women who lead just a few of Orange County’s most dynamic writing and author groups and organizations. Meet Deanna Cameron, Maddie Margarita and Barbara de Marco Barrett March 7 from 2-3 p.m.

Register for the event


Have you ever had a story idea rattling around in your head and then all of a sudden, the scene just comes to life? Its happened to me twice. ? When I saw the ACX  Challenge to write and/or narrate a scene in which a bell ? is a character, I sat down and wrote a scene. Here’s the narrated version and I’m fired up to find out what happens next.

Enjoy Hells Belles, an original scene of what I plan to to turn into a paranormal cozy mystery. ?


Coffee the lifeblood of tired men

Day 2 of the 30 Day Audio Meme Challenge comes with a quote from Raymond Chandler.


Fun fact about today’s audio meme: you know how I grew up in a haunted house? Well, mom and I found the burial site. Our resident spirit and her husband are buried in the same cemetery where one of my favorite authors, Raymond Chandler rests with his wife! True Story. Just ask my mom!