Peaky Blinders: The Immortal Man, a new Netflix-BBC coproduction in US and UK theaters now, is a big-screen outing for Cillian Murphy's anti-hero, Tommy Shelby, a traumatized WWI veteran and brutal gangster. Over the course of six blood-soaked seasons, Murphy has written Tommy's legend into the long, proud tradition of British gangster stories. As a longtime fan of the show, I was eager to see how it would fare in the cinema. You needn't have seen any of the series, which is kind of like a period Sopranos with distinctive Midlands accents and modern rock music on the soundtrack. With...