Edge of the City is a modern morality play, acted out in the railyards of New York. AWOL soldier John Cassavetes takes a job as a railroad worker, where he is taunted and bullied by supervisor Jack Warden, a union functionary appointed by the Mob. Cassavetes befriends his African-American co-worker Sydney Poitier, whose very presence enrages the bigoted Warden. Poitier dies in an "accident" arranged by Warden; Cassavetes knows the truth, but is frightened into silence by the corrupt union. Inspired by Poitier's widow to stand up for what is right, Cassavetes challenges Warden in a climactic one-on-one battle. Edge of the City was produced by David Susskind, who'd previously staged Robert Alan Aurthur's screenplay for television under its original title, A Man is Ten Feet Tall.