Season Regulars 4

1. 

   Michael Sheen

   William Masters

2. 

   Lizzy Caplan

   Virginia Johnson

3. 

   Caitlin FitzGerald

   Libby Masters

4. 

   Annaleigh Ashford

   Betty DiMello

Guest Stars 22

1. 

   Kevin Christy

   Lester Linden

2. 

   Emily Kinney

   Nora Everett

3. 

   Colin Woodell

   Ronald Sturgis

4. 

   Heléne Yorke

   Jane Martin

5. 

   Brian Howe

   Sam Duncan

6. 

   Josh Charles

   Dan Logan

7. 

   Rob Benedict

   Jonathan Laurents

8. 

   Dennis Cockrum

   Francis Masters

9. 

   Troy Blendell

   Hugh Barringer

10. 

    Ace Gibson

    Officer

11. 

    Dutch Johnson

    Guard

12. 

    Celeste Pechous

    Cindy Loman

13. Julia Faye Fisher

    Stewardess

14. 

    Nolan Gross

    13 Year Old Masters

15. Jim Grollman

    Driver

16. 

    Eric Edwards

    Referee

17. 

    Jean-Christophe Febbrari

    Waiter

18. Christopher Clausi

    Journalist (uncredited)

19. 

    Jaeden Martell

    Johnny Masters

20. 

    Beau Bridges

    Dr. Barton Scully

21. 

    Danny Jacobs

    Bob Drag

22. 

    Michael O'Keefe

    Harry Eshelman

Crew 1