 | John le Carré als Self |
 | Jake Dove als Teenage David Cornwell |
 | Charlotte Hamblin als Olive Cornwell |
 | Garry Cooper als Ronnie Cornwell |
 | Simon Harrison als Kim Philby |
 | Douglas Rankine als Rudolf Hess |
 | Dominik Dervaics als Tony Cornwell |
 | Mike Noble als Adult David Cornwell |
| Errol Morris | Director |
| Errol Morris | Writer |
| Errol Morris | Producer |
| Dominic Crossley-Holland | Producer |
| Steven Hathaway | Producer |
| Simon Cornwell | Producer |
| Stephen Cornwell | Producer |
| Hossein Amini | Executive Producer |
| P.J. van Sandwijk | Executive Producer |
| Michael Lesslie | Executive Producer |
| Joe Tsai | Executive Producer |
| Philip Glass | Original Music Composer |
| Paul Leonard-Morgan | Original Music Composer |
