Operation Jasmine was the UK's biggest ever care home abuse investigation.

But in January this year proceedings against two key figures in the case collapsed, leaving dozens of families asking if they will ever get justice.

While relatives demand a public inquiry into what happened in the six Welsh care homes at the centre of the case, 12.5 metric tonnes of unpublished evidence lie in a Pontypool warehouse.

Experts say prosecutors too often face insurmountable difficulties in bringing people accused of neglecting the vulnerable to justice. Several high-profile figures are now calling for a change in the law: one barrister and academic tells File on 4 current legislation gives greater protection against cruelty to animals than against people.

With other major scandals such as those at Winterbourne View and Mid-Staffordshire still fresh in the public mind, Fran Abrams asks if the justice system is fit for purpose when it comes to dealing with abuse and neglect.
Producer: Nicola Dowling.