The Hunniwell boys and the platinum mystery

The Hunniwell brothers spend their summer days tinkering in a remote Maine wilderness, turning an out‑of‑sight pond into a launchpad for a sleek, battery‑powered plane they’ve built from a handful of copper cells. Between hauling prize fish and wrestling with makeshift shutters, they revel in the freedom of flight, yet their quiet routine is soon interrupted by a knock at the door. An unexpected visitor from the Secret Service arrives, bearing a confidential request that hints at a hidden treasure of mysterious platinum.

Drawn into a fast‑moving puzzle, the boys must blend their mechanical ingenuity with daring resourcefulness to unravel clues before the season ends. Along the way, they navigate secret channels, evade curious onlookers, and confront the limits of their own courage. The story captures the exhilaration of youthful invention and the suspense of a midsummer mystery, inviting listeners to soar alongside the brothers as they chase a secret that could change everything.