Each week we follow the team of highly trained SCU investigators as they deal with the aftermath of a major incident. The team piece together clues from the forensic evidence at the scene and work backwards to discover what caused the crash. Filming this process is a major challenge and for five months the crew were on-call 24 hours a day with both the Waitemäta and Auckland City Serious Crash Units: As well as the investigations, the series talks to people affected by the crashes. This includes family members struggling with the death of a loved one and occasionally a survivor who talks us through the harrowing events of a crash. The incidents covered in the series reveal a variety of tragic situations that often could have been avoided. Far too many Kiwis still have the attitude that it will never happen to them. SCU: Serious Crash Unit proves that tragedy can occur when you least expect it and that everyone can help make our roads safer.