The Greengage Summer (called Loss of Innocence in the U.S.) is a 1961 British drama film directed by Lewis Gilbert and starring Kenneth More and Susannah York (in her first leading role).

"[1] Joss Grey, a 16-year-old English girl, finds herself responsible for the care of her three younger siblings on a summer holiday in France when their mother is suddenly taken ill and rushed to the hospital.

When they go to the Hotel Oeillets, proprietress Mademoiselle Zisi does not want the responsibility of unchaperoned children, but her enigmatic English lover Eliot persuades her to accept them.

As the days pass, she wishes she had stuck to her original answer; she becomes increasingly jealous of the attention Eliot pays to the children—especially to Joss.

Then he rushes out of a tour of caves where champagne is stored to avoid famous guest Monsieur Renard, the best policeman in France.

Learning from a newspaper article that Eliot is a notorious jewel thief, the outraged Joss mails Hester's photo of him to the police.

He sneaks out late at night, but, on hearing a drunken Paul attack Joss in her bedroom on the second floor, he rushes up to her room.

Renard explains that Eliot is now also suspected of murdering Paul, but Joss states he died in an accident after trying to escape from her room.

With it now almost certain that the police will capture Eliot attempting to escape via the river barge, Hester breaks down in tears and is consoled by her uncle, while Joss walks away alone from the hotel down a country lane, disconsolate.

[5] More later wrote that Lewis Gilbert insisted he go on a diet before making the film in order that he might be more believable as a romantic lead.