Undersea Mystery Club, Problem at the Playground is the first in a series of books by epic! originals on Andrews McMeel Publishing. Violet is a purple mermaid who lives in Aquamarina with Wally, her narwhal. This is logical because if an early elementary reader series of books is going to have a fish in the story it had better be the closest real animal to a unicorn out there. They’re near the city’s new park for its grand opening, only it’s evident that something is immediately wrong.
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