Kettering, the town in which this series is set, was the site of a celebrated UFO sighting in February 1976. Around this time period, Tasmania was considered Australia's biggest UFO hotspot. For instance, just two years following the first Kettering sighting, a pilot reported making contact with an unidentified flying object in nearby King Island. Ten years later, in 1998, hundreds of residents of King Island reportedly saw "strange lights in the sky", with sightings going on for an entire week. As recently as 2013, residents have reported lights floating above their property, darting off in different directions.
Dr. Anna Macy (Elizabeth Debicki) wears Fergus (Henry Nixon)'s old "The Saints" T-shirt for much of the series. The Saints were a seminal Australian punk rock band that originated in Brisbane in 1973. In real life, Nixon's father (a recording engineer) engineered, mixed, and co-produced the band's fourth album, "The Monkey Puzzle".
Filmed on the Australian island state of Tasmania, the series was one of the highest profile shoots in the region since The Hunter (2011). The Tasmania Government, through Screen Tasmania, invested one million dollars - of an almost fifteen million budget - in the series. Upon its release, it was the biggest television production yet made in the state.
Series creator Vicki Madden grew up in northeast Tasmania, and just like Anna Macy (the show's protagonist), lived in London. As a child, Madden remembers seeing unidentifiable lights in the sky when she was driving home with her mother one night. A lot of people in Tasmania see similar lights and accept them.
A second season was in development in May 2017, but creator Vicki Madden confirmed on Twitter in June 2018 that it was ultimately not picked up by Foxtel.