Hunter Page-Lochard, Steve Bastoni, Kate Box and Shareena Clanton all appeared in Wentworth (2013) but didn't share any scenes together
The series is based on the real 2019/2020 black summer bushfires. The producers spoke with the survivors of the fires and the stories are based on the New Years Eve fire, the start to the season in Queensland and the death of several firefighters.
The production used a 'dream screen' for several of the fire scenes, as it was one of the safest options during filming.