The Public Enemy showcases James Cagney’s powerful 1931 breakthrough performance as streetwise tough guy Tom Powers, a role Cagney won only because production chief Darryl F. Zanuck made a late casting change. Cagney had a secondary role but Zanuck soon spotted Cagney’s screen dominance and gave him the star part, even after shooting had begun. From that moment, an indelible genre classic and an enduring star career were both born. Bristling with ’20s style, dialogue and desperation under the masterful directorial eye of William A. Wellman, this is a virtual time capsule of the Prohibition era -- taut, gritty and hard-hitting