The Mystery of the Tenth

The finale of an action-packed middle grade fantasy duology about a young Cuban American girl who discovers that she’s one of the nine muses of Greek mythology. Perfect for fans of The Serpent’s Secret, the Aru Shah series, and the Percy Jackson and the Olympians series.

Callie Martinez-Silva is finally getting the hang of this whole goddess within thing. Six months after learning she was one of the nine muses of ancient myth, she and the other junior muses are ready for new adventures. Except first Callie has to go to New York City for the summer to visit her dad, stepmom, and new baby brother.

Then the muses get startling news: an unprecedented tenth muse has been awakened somewhere in Queens, putting Callie in the perfect position to help find her. And she’ll have help—thanks to a runaway mold problem in London, Muse Headquarters is moving to the New York Hall of Science.

But balancing missions and family-mandated arts camp proves difficult for Callie, especially once mysterious messages from spiders (yikes!) begin to weave a tale of ancient injustice involving Callie’s campmate Ari.

Now Callie and her friends have to make a choice: follow orders and find the tenth muse or trust that sometimes fate has other plans. Callie’s summer in New York just went from family trip to epic quest. Can she untangle an ancient mystery before it’s too late?

Greek Mythology for Kids: Join the Muse Squad as they navigate the modern world of New York City, complete with ancient goddesses, mythical creatures, and a brand-new, mysterious tenth muse.

Friendship and Family: Callie must balance her secret life as a muse with visiting her dad, stepmom, and new baby brother, all while relying on her friends in the Muse Squad.

Gods and Goddesses: When messages from spiders point to an ancient injustice, Callie finds herself tangled in a conflict that involves powerful goddesses like Athena.

Cuban American Protagonist: Callie Martinez-Silva, a funny and relatable Cuban American girl, discovers the true strength of her heritage and her power as she takes on her biggest mission yet.