When, in 2008, Sergeant Maurice McCabe complained of shoddy investigations into serious crime in County Cavan, nothing could have prepared him for what was in store.A career garda, McCabe never set out to be a whistleblower. However, over the following eight years, he exposed gross incompetence and corruption within An Garda Siochana. It ranged from a violent criminal being free to murder, to country-wide corruption in the policing of road safety.Along the way he paid a terrible price, enduring vilification, bullying and harassment by forces who wanted to silence him and his inconvenient truths.