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...
Vincent Price
as Sir Hugh
David Tomlinson
as Harold Tufnell-Jones
Tab Hunter
as Ben Harris
Susan Hart
as Jill Tregillis
John Le Mesurier
as Rev. Jonathan Ives
Henry Oscar
as Mumford
Derek Newark
as Dan
Roy Patrick
as Simon
Dennis Blake
as Harry
Steven Brooke
as Ted
Jim Spearman
as Jack
Tony Selby
as George
