Biopic sobre la vida y misteriosa desaparición de Madalyn Murray O'Hair (1919-1995), fundadora de Ateos Americanos, organización dedicada a defender las libertades civiles de las personas ateas.
 | Melissa Leo | Madalyn Murray O'Hair |
 | Brandon Mychal Smith | Roy Collier |
| Juno Temple | Robin |
| Michael Chernus | Garth |
 | Adam Scott | Jack Ferguson |
| Rory Cochrane | Gary Karr |
| Alex Frost | Danny Fry |
| José Zúñiga | Detective Campos |
 | Josh Lucas | David Waters |
| Vincent Kartheiser | Bill; Jr |
| Marco Sanchez | Frank Gonzalez |
| Andy Walken | Young Bill |
| Ryan Cutrona | Pup |
| Sally Kirkland | Lena |
| Devin Freeman | Teen Bill; Jr |
