Rod Slater is the newly appointed general manager of the Sonderditch gold mine, but he stumbles across an ingenious plot to flood the mine, by drilling into an underground lake, so the unscrupulous owners can make a killing in the international gold market.

• Killarney Film Studios
• Avton Films
• Roger Moore
• Susannah York
• Ray Milland
• John Gielgud
• Bradford Dillman
• Tony Beckley
• Simon Sabela
• Marc Smith