By mid-summer only Ma Barker remained in Chicago, lost in her jigsaw puzzles. Karpis drove over to visit her one weekend and found she was doing surprisingly well. He and Dock took her to see a movie. To their horror, the film was preceded by a newsreel warning moviegoers to be on the lookout for Dillinger, Nelson, Pretty Boy Floyd, Karpis, and the Barkers. Karpis scrunched low in his seat as their pictures flashed on the screen. “One of these men may be sitting next to you,” the announcer said. Karpis pulled his hat low over his forehead.

Bryan Burrough