4-Star Review of Donny and Mary Grace’s California Adventure
Read the full review and comments at Online Book Club.

Read the full review and comments at Online Book Club.

Photo gallery of readers enjoying Donny and Mary Grace’s California Adventures: A Grandma Gang Mystery.
Have you read Donny, Mary Grace and the Ugly Marbles yet? If so, you’ll be interested to know that World Marbles Day is coming up! I’m serious. There really is a World Marbles Day and it has been commemorated since 1588! That’s right, World Marbles Day has taken place on Good Friday for almost 200…
Thank you to Shakiera Reece for a wonderful 4-star review of of Donny and Mary Grace’s California Adventures. Read the full review here:
Lompoc, CA (July 18, 2023) – The fourth and final mystery novel in the Grandma Gang children’s book series, Donny and Mary Grace Go to Camp, has been posthumously published following the passing of author Cathy Pepe. The new, exciting tale concludes the adventures of Donny, a curious boy with Down syndrome, and Mary Grace,…
Crime-solving siblings Mary Grace and Donny team up with the Grandma Gang to solve the mysterious disappearance of dogs from their California town; Ten percent of net proceeds from book sales to be donated to Special Olympics Lompoc, CA (September 26, 2022) – Author Cathy Pepe has released the second novel in the Grandma Gang…
Lompoc, CA – Author Cathy Pepe has released a new book, Mary Grace and Donny’s California Adventures: A Grandma Gang Mystery, a tale about a sister and brother moving to California to live with their grandmother who is part of a mystery-solving group known as the “Grandma Gang.” Ten-year-old Mary Grace, whose younger brother Donny…