Miss Hargreaves is a radio play by Frank Baker adapted from his 1940 novel. It was first broadcast on BBC Radio in the 1950's. According to Brian Sibley, who later adapted the novel for a 1989 version, the existence of this earlier BBC production impeded his efforts to write a new adaptation. This inadvertently led to Sibley's adaptations of The Lord of the Rings instead.
When, on the spur of the moment, Norman Huntley and his friend Henry invent an eighty-three-year-old woman called Miss Hargreaves, they are inspired to post a letter to their new fictional friend. It is only meant to be a silly, harmless game—until Miss Hargreaves arrives on their doorstep. She is, to Norman’s utter disbelief, exactly as he had imagined her: enchanting, eccentric, and endlessly astounding. He hadn’t imagined, however, how much havoc an imaginary octogenarian could wreak on his sleepy Buckinghamshire hometown.