Auntie Blodwen runs the house while her nephew Owen's wife is sick in bed or the hospital. What is making Cissy sick? She begins to suspect foul play is afoot. But the motive is shocking.

Tom Shelton has disappeared. His wife, Judith, seems unconcerned, as does Val, the other man in her life. Sergeant Hurby (Donald Pleasance), policeman and long time friend of Shelton's, begins the investigation and soon suspects Judith.

A young girl writes an essay about her parents and the events of one particular childhood day. Is it all the product of her imagination, or is it the truth?