Hawaii Five-O (1968)

S8E22 The Capsule Kidnapping

A Japanese entrepreneur's son is abducted and concealed in a submerged capsule, prompting a desperate situation. The kidnappers demand a staggering ransom of $1.5 million for his release. As time ticks away, the family must navigate a web of danger and uncertainty, racing against the clock to secure the funds and save the boy from his perilous confinement beneath the waves.