Gretchen Mol Dr. Agatha Matheson Actor Eoin Macken Karl D'Branin Actor David Ajala Roy Eris Actor Sam Strike Thale Actor Maya Eshet Lommie Actor Angus Sampson Rowan Actor Jodie Turner-Smith Melantha Jhirl Actor Brian F. O'Byrne Auggie Actor Jeff Buhler Executive Producer Daniel Cerone Executive Producer George R.R. Martin Executive Producer Gene Klein Executive Producer David Bartis Executive Producer Doug Liman Executive Producer Alison R. Rosenzweig Executive Producer Michael J. Gaeta Executive Producer Lloyd Miller Executive Producer Robert Jaffe Producer