Impact is a 1949 American film noir drama film directed by Arthur Lubin, starring Brian Donlevy and Ella Raines. Filmed entirely in California, the film included scenes filmed in Sausalito, and at San Francisco's Fisherman's Wharf and other locations around the city. Impact was based on a story by film noir writer Jay Dratler. The supporting cast features Charles Coburn, Helen Walker, Anna May Wong, Philip Ahn and William Wright.