Aaron Sorkin Creator, Executive Producer Jeff Daniels Will McAvoy Actor Emily Mortimer Mackenzie McHale Actor John Gallagher Jr. Jim Harper Actor Alison Pill Margaret Jordan Actor Thomas Sadoski Don Keefer Actor Olivia Munn Sloan Sabbith Actor Dev Patel Neal Sampat Actor Sam Waterston Charlie Skinner Actor Marcia Gay Harden Rebecca Halliday Guest Star Chris Messina Reese lansing Guest Star David Harbour Elliot Hirsch Guest Star Grace Gummer Hallie Shea Guest Star Constance Zimmer Taylor Warren Guest Star Lauren Tom Kathy Ling Guest Star Salli Richardson-Whitfield Jane Barrow Guest Star Chris Chalk Gary Cooper Guest Star Adina Porter Kendra James Guest Star Margaret Judson Tess Westin Guest Star Wynn Everett Tamara Hart Guest Star Thomas Matthews Martin Stallworth Guest Star John F. Carpenter Herb Wilson Guest Star Charlie Weirauch Jake Watson Guest Star Trieu Tran Joey Phan Guest Star Riley Voelkel Jenna Johnson Guest Star Brian Henderson Connor Guest Star Alan Poul Executive Producer Scott Rudin Executive Producer