Grandpere's Ghost Swamp by Rachel M. Marsh

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March 24, 2026

Greenwillow Books / HarperCollins

Hardcover

ISBN: 9780063325432

Ages 8 - 12

$18.99

BISAC1: Juvenile Fiction / Fantasy / General

BISAC2: Juvenile Fiction / Science & Nature / Environment

BISAC3: Juvenile Fiction / Cooking & Food

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Grandpere’s Ghost Swamp

Grandpere’s Ghost Swamp is more than a book. It’s an experience. I could smell the fish market, taste the mirlitons, feel the bayou air, and hear the Zydeco music in the French Quarter. What a wonderful offering of cajun culture and family. Every page is like getting the warmest hug from your favorite ghost. I wish I could share it with my grandpere.” —M.R. Fournet, author of Brick Dust and Bones

"I expected ghosts and swamps, but was surprised with family ties that go beyond blood relatives and environmental activism. Basil does more than learn about Louisiana history. She helps save her part of the world. A lovely, cozy read that proves Rachel Marsh has 'the gift.'" —Marti Dumas, author of The Wildseed Witch and Secret Society of Rebel Girls

A cozy ghost story about family, environmental activism, food, and friendship.

Basil Theriot has spent her entire life in New Orleans—in her family’s famed Cajun restaurant in the French Quarter, really—but she’s never been out to the bayou where her grandfather grew up. She’s also never seen a ghost, even though dozens of ghost tours pass by the restaurant every day and her best friend Tommy is determined to be a ghost hunter.

But then Grandpere’s ghost appears. And he has a mission for her.

Basil wouldn’t mind being haunted if Grandpere could be helpful and share his secret recipe that might save the restaurant. But instead, he’s intent on connecting Basil with her Cajun heritage. He sends her out to the bayou to meet his friends: an airboat captain, a shrimper, and a scientist rebuilding Louisiana’s fast-disappearing coastline.

But each ghostly quest pulls Basil further away from her parents’ expectation that she’ll take over the restaurant one day and jeopardizes her friendship with a jealous Tommy.

Can Basil help Grandpere move on, save the bayou, save her friendship, and not disappoint her parents?

Grandpere’s Ghost Swamp has a little bit of everything: a pinch of spookiness, a dash of environmental activism, and a heaping of family.