| cast |
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| Series Regulars | |||
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| Brie Larson | Brie Larson as Kate Gregson | Eddie Izzard | Eddie Izzard as Dr. Hattarras |
| Frances Conroy | Frances Conroy | John Corbett | John Corbett as Max Gregson |
| Keir Gilchrist | Keir Gilchrist as Marshall Gregson | Rosemarie DeWitt | Rosemarie DeWitt as Charmaine Craine |
| Toni Collette | Toni Collette as Tara Gregson | | |
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| Recurring & Guests | |||
| |||
| Michael Hitchcock | Michael Hitchcock as Ted Mayo | Viola Davis | Viola Davis as Lynda P. Frazier |