Mackenzie Rio Davis is a Canadian actress. She made her feature film debut in the drama film Smashed (2012). In 2013, she appeared in the film The F Word, for which she received a Canadian Screen Award nomination for Best Supporting Actress. From 2014 to 2017, she starred as computer programmer Cameron Howe in the AMC period drama series Halt and Catch Fire.

The Turning is a 2020 American gothic supernatural horror film directed by Floria Sigismondi and written by Carey W. Hayes and Chad Hayes. It is a modern adaptation of the 1898 ghost story The Turn of the Screw by Henry James. It stars Mackenzie Davis, Finn Wolfhard, Brooklynn Prince, and Joely Richardson, and follows a young governess in 1994 who is hired to watch over two children after their parents are killed.