Six months ago, new laws on coercive and controlling behaviour were introduced, targeting those who subject spouses, partners and family members to psychological and emotional torment - but stop short of violence.
The type of abuse covered by the new offence could include a pattern of threats, humiliation and intimidation, or stopping someone from socialising, controlling their social media accounts, surveillance through apps and dictating what they wear.
It's an issue featured in Radio 4's The Archers, in a story-line which saw character Rob Titchener's long-term emotional abuse of wife Helen slowly drip fed to listeners over two-and-a-half years, bringing wide public attention to the problem. But what about the women who this affects in real life?
Joshua Rozenberg speaks to Gemma Doherty about the physical and emotional abuse she suffered while living with her partner Mohammed Anwar. Mr Anwar sought to control every aspect of Gemma's life, from who she socialised with, her diet, and an enforced exercise regime. Mr Anwar became one of the first men jailed for the new offence.
He also speaks to Women's Aid - one of several charities which campaigned for the new law, which hopes that the threat of a conviction will help bring in cultural changes in how some people conduct themselves in relationships.
Also: Joshua interviews Peter Clarke, the Chief Inspector of Prisons, to find out what he has learned six months into taking up his new post.
Producers: Ben Crighton and Richard Fenton-Smith.