The inquiry returns to Darwin on Monday for two weeks of hearings focused on the child protection system.
Former deputy Chief Minister, Robyn Lambley, is likely to give evidence later this week.
Ms Lambley was the deputy leader of the Country Liberals government from August 2012 until March 2013, before quitting the party in 2015 to sit as an independent Alice Springs MP.
Children's Commissioner Colleen Gwynne, Children's Court of Western Australia president Judge Denis Reynolds and Victorian Commissioner for Aboriginal Children and Young People Andrew Jackomos will also give evidence.
Current and former government staff including Territory Families managers, Aboriginal community elders and case workers will also be witnesses during the two-week sitting.
Commissioners Margaret White and Mick Gooda will also hear the personal stories of people who have been in the care and protection system.
The first witnesses on Monday are an Indigenous child health and development expert and a child protection practitioner.