The Australian Broadcasting Corporation was set to co-produce and help fund the production but pulled out of its deal when Jane Campion cast American Elisabeth Moss in the lead role. The Australian Broadcasting Corporation had only agreed to help fund the project if an Australian or New Zealander was cast in the lead role. After they left the project, UKTV stepped in to co-produce and replace the lost funding.
Nicole Kidman officially joined the second season in June 2016. Negotiations to have her join the show lasted a full year, in order to accommodate her schedule with Big Little Lies. The part, which she was able to shoot in five weeks, was written especially for her.
The trivia item below may give away important plot points.
Moss's character Peggy Olson in Mad Men has an unplanned pregnancy and giving her baby up for adoption during the end of the first season. Her character in Top the Lake, Robin Griffin, gets raped as a teenager (before the show starts) and gives her baby up for adoption.