| Lyric Opera of Chicago | | |
| Kevin Newbury | Dirección de escena | |
| Victoria "Vita" Tzykun | Diseño de escena | |
| Chicago Lyric Opera Chorus | | |
| Chicago Lyric Opera Orchestra | | |
| Daniela Candillari | Dirección | |
| Jonas Hacker | Tenor | Timothy Laughlin |
| Joseph Lattanzi | Barítono | Hawkins Fuller |
| Devon Guthrie | Soprano | Mary Johnson |
| Vanessa Becerra | Mezzosoprano | Miss Lightfoot |
| Marcus DeLoach | Barítono | Senator Joseph McCarthy, Estonian Frank, Interrogator |
| Amy Kuckelman | Soprano | Lucy |
| Will Liverman | Barítono | Tommy McIntyre |
| Reginald Smith Jr | Barítono | Senator Charles E. Potter, General Airlie, Bartender |
| Sam Handley | Bajo-barítono | Potter's Assistant, Bookseller, Party Guest, Technician, French Priest |