The story follows siblings Harper and Bohdi Jensen, who are uprooted from their family’s Pennsylvania farm when their mother accepts a new job as a curator at a museum in Manhattan. Life in the “concrete jungle” is a far cry from the rolling meadows they’ve left behind, but Harper soon finds refuge in nearby Central Park — which her mother calls “the biggest backyard in the world.”
It’s there that Harper quickly forms a diverse circle of friends: Addy, Eli, Gabriel and Zara. But their adventures take a chilling turn when the group stumbles across the body of a saxophonist named Zoots Morgan. What begins as an accidental discovery soon spirals into a risky investigation involving stolen artifacts, family secrets and a race to clear Harper’s mom’s name before it’s too late.
