The protégé of a powerful congressman discovers his boss's corruption.
| Actor | Role |
|---|---|
 Van HeflinChamp Donohue | Champ Donohue |
 Peter FondaRobbie Conroy | Robbie Conroy |
 Hiram ShermanJoe Parker | Joe Parker |
 Alexandra IslesBetty Jo Daly | Betty Jo Daly |
 Pat HingleCounsel for the Defense | Counsel for the Defense |
 Dorothy StickneyGladys Flaherty | Gladys Flaherty |
 Will GeerMalcolm Stoddard | Malcolm Stoddard |
| RRobert MilliBob Harris | Bob Harris |
| SStaats CotsworthShaddick | Shaddick |
 Loring SmithGuthman (uncredited) | Guthman (uncredited) |