In an interview with Chris Stuckmann, Colin Trevorrow stated the screenplay was twenty years old.
This was the second collaboration between Jacob Tremblay and Naomi Watts. Their first collaboration was in Shut In (2016).
Naomi Watts and Jaeden Lieberher previously starred together in St. Vincent (2014).
Director Colin Trevorrow said he first read a version of the screenplay, that was "much more of a black comedy", but he "wasn't really interested" in making such a movie, therefore it was changed.