Maggie Cohn (born 1962) is an American screenwriter. She is mostly known for Lou (2022), American Crime Story (2016) and The Staircase (2022). Career. Cohn attended Vassar College in 2003. In 2023, HBO Max developed a scripted series based on Heidi Fleiss written by Cohn. Cohn was nominated for a Writers Guild of America Award in 2023 for the Staircase. She previously won the award in 2019 for American Crime Story. She also won a Producers Guild of America Award for American Crime Story. A limited TV series called The Challenger is currently being written by Cohn, based on the 2022 Meredith Bagby book, "The New Guys: The Historic Class of Astronauts That Broke Barriers and Changed the Face of Space Travel" about the Space Shuttle Challenger. Personal life. Cohn has been in a relationship with Colin Firth since 2022. They met on the set of the drama series, The Staircase.