For the first time on TV, The Investigators reveals the chilling case of Dr. Brian Crickitt, a Sydney GP who weaponized his medical expertise in a premeditated murder.

Operation Bastille follows the gripping investigation that exposed Stephen Michael Adams, the notorious "West Perth Rapist."

The Investigators delves into the tragic case of Rachel Barber, a 15-year-old aspiring dancer whose 1999 disappearance shocked Melbourne.