City in the Sea

In 1903, in Cornwall, a group of locals discover an underwater city, dating back to 1803, that hides a society of smugglers and aquatic creatures.
A chance discovery leads American mining engineer Ben Harris and acquaintance Harold to discover a lost city under the sea while searching for their kidnapped friend Jill. Held captive in the underwater city by the tyrannical Captain (Vincent Price), and his crew of former smugglers, the three plot to escape...