The first movie Sinofsky directed, in 1992, was the documentary Brother's Keeper, which tells the story of Delbart Ward, an elderly man in Munnsville, New York, who was charged with second-degree murder following the death of his brother william. Chicago Sun-Times film critic Roger Ebert, in his review of the movie, called it "an extraordinary documentary about what happened next, as a town banded together to stop what folks saw as a miscarriage of justice."