We enter the gritty world of… Charles McGraw’s voice, in this 1952 noir directed by Richard Fleischer. You may know him from 20,000 Leagues under the Sea and (spoiler alert) Soylent Green is people! In The Narrow Margin, a cop must protect a woman scheduled to testify against a killer. Much of the action takes place on a cross-country train, in which the visual margins are indeed narrow. Shelly Brisbin with David J. Loehr and Nathan Alderman.