"Vernon Henkel"@en . "Magazine Enterprises"@en . "\u201CThey call him Mr. In-Between because he is between the law and the underworld!\u201D Carter Mason is a private investigator who walks the line between law and crime. In his lone appearance he helps prove the innocence of a widow suspected of murdering her husband."@en . . . "Mr. In-Between"@en . . . "Created by"@en . . "Original Publisher"@en . . "Carter Mason"@en . . . "\u201CThey call him Mr. In-Between because he is between the law and the underworld!\u201D Carter Mason is a private investigator who walks the line between law and crime. In his lone appearance he helps prove the innocence of a widow suspected of murdering her husband."@en . . . "A-1 #6"@en . "Mr. In-Between"@en . . "First Appearance"@en . . "Real Name"@en .