Charlie O'Neill, still grieving his mom and missing his dad's attention, overhears surfers-turned-burglars plotting "the heist of the century." No one believes him—so Charlie does what middle-grade heroes do best: he investigates. What follows is a breathless night of closed iron gates, cut glass, a swaying rope five stories up, and a choice that complicates right and wrong. Rich back matter clarifies exactly what's true (a lot), what's fictional (Charlie's family), who the real thieves were, how the gems traveled, and what was recovered. Illustrated throughout, this is perfect for fans of mystery, history, and museum lore—plus any reader who loves saying, "Wait…that really happened?"