A lonely doctor who once occupied an unusual lakeside home begins exchanging love letters with its former resident, a frustrated architect. They must try to unravel the mystery behind their extraordinary romance before it's too late.

Shortly after David Abbott moves into his new San Francisco digs, he has an unwelcome visitor on his hands: winsome Elizabeth Martinson, who asserts that the apartment is hers -- and promptly vanishes. When she starts appearing and disappearing at will, David thinks she's a ghost, while Elizabeth is convinced she's alive.

Three people — a blue-collar American, a French journalist and a London school boy — are touched by death in different ways.