An Officer and a Spy (French: J'accuse) is a 2019 historical drama film directed by Roman Polanski about the Dreyfus affair, with a screenplay by Polanski and Robert Harris based on Harris's 2013 novel of the same name. The French title has its origins in the J'Accuse...! open letter รmile Zola wrote in 1898 in which the author accused many people of France of continuing to support the increasingly blatantly erroneous accusations against Dreyfus. The film had its premiere at the 76th Venice International Film Festival on 30 August 2019, winning the Grand Jury Prize and the FIPRESCI Prize.