* Signed bookplate * This summer, beware of sharks... Brooklyn girl Kaylani McKinnon feels like a fish out of water. She's spending the summer with family friends in their huge house on Martha's Vineyard, and the vibe is definitely snooty. Still, there are beautiful beaches, lots of ice cream, and a town full of fascinating Black history. Plus a few kids her age who seem friendly. Until the shocking death of a popular teenage boy rocks the community to its core. Was it a drowning? A shark attack? Or the unthinkable--murder? Kaylani is determined to solve the mystery. But her investigation leads her to uncover shocking secrets that could change her own life as she knows it... if she survives. New York Times bestselling author Tiffany D. Jackson makes her thrilling middle-grade debut with this heart-pounding mystery packed with twists and turns that will keep readers guessing until the end.