British teenager Leo Colston spends a summer in the countryside, where he develops a crush on the beautiful young aristocrat Marian. Eager to impress her, Leo becomes the "go-between" for Marian, delivering secret romantic letters to Ted Burgess, a handsome neighboring farmer.

Julie Christieas Lady Marian Trimingham
Alan Batesas Ted Burgess
Edward Foxas Hugh Trimingham
Michael Redgraveas The Older Leo Colston
Dominic Guardas The Young Leo Colston
Margaret Leightonas Mrs Maudsley
Michael Goughas Mr Maudsley
Richard Gibsonas Marcus Maudsley
Roger Lloyd Packas Charles
Gerry Fisher