An elderly woman with little money is in danger of losing the children's hospital converted from her stately home - unless she can find a collection of gold coins hidden somewhere in the building. Meanwhile, a conman is also keen to get his hands on the treasure, and persuades an American tomboy to pose as the heiress to the estate. Disney comedy, starring Jodie Foster, David Niven, Helen Hayes and Leo McKern.

When ex-con artist Harry claims that a secret treasure is hidden inside Candleshoe, an English estate, he creates an elaborate plan to find and steal the prize. By convincing a girl named Casey to impersonate the estate owner's long-lost granddaughter, Harry hopes to uncover the treasure's location. But when Casey has a change of heart, she must follow the clues and find the treasure, in order to save Candleshoe and stop Harry before it is too late.