It's Prisons Week, when Christians are encouraged to pray for all those affected by the criminal justice system. But is prayer alone the answer to the problems facing prisoners, their victims, and those working in prisons? Rosa Hunt discusses some of the issues with a panel of guests, including Rev Nick Sandford, managing chaplain at HMP Cardiff; Julia Houlston-Clark, CEO of Wales Restorative Justice Partnerships; and criminal defence barrister Andrew Taylor.