PSNI detectives discuss the details of major investigations and appeal to the public for help in cracking cases. The show features footage of offences caught on CCTV, along with dramatic reconstructions of major crimes. Viewers who can help detectives are invited to phone the independent charity Crimestoppers. Any details that they provide will be recorded anonymously before being shared with detectives on each case. Journalists Wendy Austin and Dearbhail McDonald present.