When 23-year-old Celeste Manno was brutally murdered in her own bedroom in November 2020, her mother Aggie knew it could have been prevented. A former coworker had stalked and harassed Celeste for over a year, and the warning signs were everywhere. Police were told. Courts were involved. Intervention orders were issued. Somehow, none of it was enough.

In this episode I Catch Killers, Aggie Di Mauro exposes the catastrophic system failures that preceded Celeste's murder, a justice system she believes let her daughter down, and the fight for a coronial inquest that five and a half years later still hasn't happened.