This summer, be cautious of sharks... Brooklyn teen Kaylani McKinnon feels out of place. She's visiting family friends on Martha's Vineyard, where the atmosphere is elitist. Yet, there are stunning beaches, plenty of ice cream, and a town rich in Black history. She meets friendly kids her age. Then, a popular teen's sudden death stuns the community. Was it an accident, a shark attack, or murder? Kaylani vows to solve the mystery. Her investigation reveals shocking secrets that could alter her life. New York Times bestselling author Tiffany D. Jackson presents a thrilling middle-grade debut, filled with twists and turns that keep readers guessing until the end.