Tom Swift and the Electronic Hydrolung

Teenage genius Tom Swift Jr. finds himself at the helm of a high‑stakes recovery mission when a Jupiter‑bound probe streaks back toward Earth. With his father, a team of Navy officials and his close friend Bud Barclay, Tom watches the missile’s silent glide across the South Atlantic, ready to fire the retro‑rockets that will slow its fiery descent. The tension of the countdown mixes with Tom’s excitement over a daring experiment that could give America the first real data from the gas giant.

But the adventure doesn’t stop in the sky. When the probe lands, Tom’s latest invention—the electronic hydrolung—lets him and his crew dive beneath the waves to retrieve the valuable instrument package before rival forces can snatch it. Along the way they confront hidden submarines, mysterious sea creatures, and a series of clever deceptions that test both their courage and their cutting‑edge technology.