Minnie Driver has signed on to star opposite Hilary Swank in the legal drama Betty Anne Waters, which Tony Goldwyn is directing for Omega Entertainment.

According to The Hollywood Reporter, the film is based on the true story of Waters (Swank), an unemployed single mother who saw her brother convicted for a murder-robbery in 1983 and sentenced to life in prison. Convinced of his innocence, she spent the next decade earning a law degree and working on her brother's case, challenging the conviction with DNA evidence. Richard LaGravenese wrote the most recent draft; Pamela Gray penned the original script.

Driver plays Abra, Swank's law school friend with a wild-party past who helps her with the brother's case.

The movie begins production next month.