Hannah Gross is a Canadian actress who is best known for her role as Debbie Mitford in the Netflix drama Mindhunter. Gross played Katie in Sharon Pollock`s 1984 play Doc and directed Tennessee Williams` A Streetcar Named Desire (1947) for the Stella Adler Studio of Acting. She performed in Williams` 1953 one-act play Talk to Me Like the Rain and Let Me Listen in 2012. Gross was cast in I Used to Be Darker (2013) after meeting its director, Matthew Porterfield, at the after-show party for the New York City screening of his previous film, Putty Hill (2010). Also in 2013, she played the title character in Dustin Guy Defa`s short film Lydia Hoffman. Gross played the lead female character in Charles Poekel`s film Christmas, Again, which had its premiere at the 2014 Locarno International Film Festival. She also performed in Nathan Silver`s 2014 film Uncertain Terms and reunited with him in his 2015 film, Stinking Heaven. Also in 2014, Gross played the lead role in David Raboy`s short film Beach Week. Her other notable works include Marjorie Prime (2017), Her Smell (2019), Joker (2019) and Flashback (2020).