Lionsgate and Pacific Standard - actress Reese Witherspoon and producer Bruna Papandrea's production company - bought the film rights to Jessica Knoll's debut novel before it had even been published. The rights were secured in April 2015, over a month before the book hit stores.
Author Gillian Flynn got to adapt her own book, Gone Girl, for the screenplay. Author Jessica Knoll was also given the opportunity to adapt her original material for the screenplay. Reese Witherspoon, who produced Gone Girl, also produces here.
Mila Kunis and Chiara Auelia had meetings over zoom before filming started to create the character of Ani together.
Filming in Toronto Ontario Canada
Jennifer Beals, who here portrays Ani's (Mila Kunis) boss LoLo, also played her mother in the 2010 Apocalyptic epic The Book of Eli.