Lifting the lid on their personal case files, in each episode of this gripping true crime series, one of Australia's best detectives returns to the toughest case of their career to reveal what it took to get the country's hardest criminals behind bars.

This season, we unravel a string of armed robberies, witness the infiltration of a Bikie gang, and put a serial killer behind bars. We follow the seven-year manhunt for one of Australia's most notorious killers, solve a confounding double homicide, and convict a killer whose victims were never found...

Combining eye-witness testimony, case footage, news archive, exclusive access to police files, and illustrative reconstructions, this series follows the twists and turns of each major investigation, from committal to resolution. 

This series highlights the determined police work taken to solve the hardest cases of these investigators' careers.