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Cover of Emily Windsnap and the Crystal Caves

Emily Windsnap and the Crystal Caves

Liz Kessler (2026-05-05)

Subgenre
Age groupMiddle Grade 8-12
Content ratingPG
Pages (Standard (250-400))
Setting
CSM age8

Content levels

ViolenceMild
Sexual contentNone
LanguageNone

Trigger warnings

Not yet tagged

Hero archetypes

Royalty / Prince

Protagonist archetypes

Ensemble CastFound Family Crew

Synopsis

Join the entire gang of mer-friends--along with Neptune, king of the ocean, and Viking god Thor--in this epic and masterfully crafted adventure by New York Times best-selling author Liz Kessler. Adventure always seems to find Emily Windsnap! So when she discovers a bangle with a unique crystal under Rainbow Rocks, she and her friends are soon unraveling a whole new mystery. After learning that the crystal originally came from a familiar place--Halflight Castle!--Shona and Emily reunite there with Aaron . . . and none other than Neptune, king of the oceans. The bangle leads the mermaids to a cave full of crystals, and, with Mandy's help, they discover the truth about the jewel's origin--and what's at stake if they don't make things right. Unfortunately, the only solution involves getting the sea and sky's most powerful (and notoriously selfish) rulers to put their own interests aside for the greater good. Will the quartet find a way to convince the imperious Neptune and the Viking god Thor to come together to prevent disaster?

Is Emily Windsnap and the Crystal Caves appropriate for my child?

Suitable for most readers 8 and up.

Parents should know this is a wholesome middle grade fantasy adventure featuring mermaids, Norse mythology, and themes of friendship and cooperation. Mild peril as characters work to prevent disaster, but violence is minimal and age-appropriate.

What to know going in

This book has mild violence, no sexual content, and clean language.

Who'll love this

Kids will love the exciting underwater adventure with mermaids, magical crystals, and mythological gods coming together to solve a mystery.

Tags

MythologyUnderwater FantasyAdventure