Barlinnie's prison radio station broadcasts into every cell, offering music request shows and vital information to support rehabilitation. Mark meets Barry Richardson, the prison officer who set up the station and learned how to operate it alongside the prisoners. Inmates including DJ Geo tell Mark how they've learned valuable life skills like teamwork and responsibility. Victoria Byrne from Citizens Advice uses the radio station to help prepare prisoners for their release, and for former inmate Jordan Robertson, working at Barbed Wireless led to a career in the media.