Multi-millionaire Simeon Lee, frail in his old age, unexpectedly invites his family to gather at his home for Christmas. The gesture is met with suspicion by the guests. Simeon is not given to warm family sentiment, and the family are not on good terms, in particular, with the black sheep of the family, Harry. Simeon also searched out his orphaned, Spanish-born granddaughter, Pilar Estravados, to live in his house. None have met their late sister Jennifer's daughter before; she proves to be delightful. Simeon is intent on playing a cruel game with his family's emotions. Stephen Farr, a surprise guest, arrives on Christmas Eve. He is the son of Simeon's former partner in the diamond mines, welcomed warmly by Simeon. Simeon calls his family together that afternoon, to hear him on the telephone with his attorney, saying he wants to update his will after Christmas. This incomplete information stirs up negative feelings among his sons and their wives.