Fall of the Fireflies (Seasons of Sisterhood #1)
by Guadalupe García McCall
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From bestselling author Guadalupe Garca McCall comes the first book in the Seasons of Sisterhood trilogy, in which twins Velia and Delia take on a divine assignment to be monster-hunting warrior women and save their father's life.
From Pura Belpré Award--winning author Guadalupe Garca McCall comes the first in the Seasons of Sisterhood trilogy: a reimagining of Sophocles' Antigone set in the world of her bestselling Summer of the Mariposas.
As fifteen-year-old twins Delia and Velia plan the launch of their Magic-Twin Tour with their father's Tejano band, a sudden supernatural attack on their father derails the family. Pap¡ is delirious with a susto, a fright so awful that it allows a mysterious supernatural being to begin slowly sucking the life out of him.
As the twins hunt down his attacker, a wider world of borderland monsters opens up to them. Each twin has her own decision to make, with her own guide from the Aztec pantheon--Quetzalcoatl guiding Velia, and Xolotl advising Delia. Soon the girls must choose: Should they follow a divine mandate to become monster hunters for the goddess of death?
Can the sisters obey the will of the gods while saving their father's life? Anything can happen within the magical realm of the borderlands.
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Book Details
- ISBN
- 9781643796994
- Binding
- Hardcover
- Authors
- Guadalupe García McCall
- Publisher
- Tu Books
- Published Date
- October 21, 2025
- Language
- English
- Pages
- 352
- Physical Info
- 1.12 in H x 8.49 in L x 5.87 in W (1.13 lb)

Very rich, filled with action. The Dual PoV is amazing because I love a Twins' sibling story, especially when they start to drift apart. Twin gods are going to guide them in this high-stakes, time-sensitive quest with supernatural and magic realism lore to save their father's life. I loved learning about the three souls and their location.
These are the books I craved when I was younger and I’m so happy to see that Latinx authors are writing Aztec/Mexican folklore.The story follows twin sisters, Delia and Velia who have previously battled with the supernatural forces and now they must use their skills to help their papá. The sisters also have their friends along for the ride, recording some of their confrontations for a youtube channel. I found some of their friends to be hilarious. This one does have some Spanish words sprinkled throughout, and I love to see that in my Latinx books. For me, it makes the characters seem more realistic and adding some Spanish to the dialogue is always great to see. Both sisters have their plates pretty full. From fighting monsters, to touring with their father, they are also dealing with their own inner battles. It was interesting to see which route they would take. This one also delves a bit deeper into their family bonds, in particular with their father.My favorite scene for me was with Abuelita Remedios, where she was telling the sisters and their friends about the susto, and explaining about the ihiyotl, and other possible monsters who could be behind the susto with their papá.If you love stories about sisterhood, blended family, and reluctant heroes turned monster hunters, Fall of the Fireflies mixes Aztec and Mexican folklore in the best way. Perfect for young adult readers.Favorite quotes:All we have to do is follow the luciérnagas and shine our own special little light on the world, even in—or maybe, despite—the darkness.“together forever, no matter what.”