The City Beneath the Sea

While investigating the disappearance of research ships in the Aegean, the Seaview is damaged by a bomb. Captain Crane goes ashore, and pretends to be a diver for hire. The Captain meets an ex-diver, now a mute due to a tragic accident, who claims to have seen a "city beneath the sea". Crane gets hired by the "bad guy", but his cover is soon blown. He is taken prisoner and nearly loses his life.

Cuando el Seaview explora las costas del mar Egeo, con la misión de averiguar el porqué de la extraña desaparición de otras naves, alguien intenta hacerlo explotar. El capitán Crane investiga en una isla próxima y descubre la existencia de una ciudad submarina creada por un ambicioso y poco recomendable personaje.