So Evil, So Young

So Evil, So Young is a 1961 British Technicolor Reform school Prison film from the Danzigers, starring Jill Ireland and Ellen Pollock.

Lucy tells Claire to take the jewels and give her half when she gets out of prison, where she will undoubtedly go. She heads to a local club where she sees her exboyfriend Tom John Charlesworth eyeing his new girlfriend Anne Jill Ireland. Jealous and angry, she takes a necklace she kept in her jacket pocket, which she stole from the house, and puts it in Annes jacket pocket, without anyone seeing.The police come to Annes house and ask her if she knows of any stolen jewellery, for Lucy has told the police that she was her accomplice. Anne denies and but the police find the necklace in her coat pocket. She is sentenced to three years in Wilsham, a prison with no bars on the windows and they rely on your honour not to just walk out. They also do not like to call it a prison. ........

Source: Wikipedia