Code Blue: Murder S01E01 - The Murder of Katherine Smith

In the first programme, detectives are called out to a flat in Cardiff where the body of young mother Katherine Smith, aged 26, has been found on the floor with stab wounds. The key suspect is her boyfriend of six weeks, Anthony Lowe. Detectives know the first 48 hours is key in terms of gathering evidence and picking up suspects – but Lowe has gone missing.