| NNigel AnthonySelf - Narrator (voice) | Self - Narrator (voice) |
| RRosalind CartwrightSelf - (as Dr Rosalind Cartwright) | Self - (as Dr Rosalind Cartwright) |
| DDenise CorkeSelf - Michel Corke's Mother | Self - Michel Corke's Mother |
| MMichel CorkeSelf (archive footage) | Self (archive footage) |
| PPenny CorkeSelf | Self |
| FFloyd S. Cornelison, Jr., M.D.Self (as Dr Floyd Cornelison) | Self (as Dr Floyd Cornelison) |
| WWilliam HechterSelf - Defence Lawyer | Self - Defence Lawyer |
| NNeil KaveySelf (as Dr Neil Kavey) | Self (as Dr Neil Kavey) |
 Charles T. TartSelf (as Dr Charles Tart) | Self (as Dr Charles Tart) |
| MMark MahowaldSelf - (as Dr Mark Mahowald) | Self - (as Dr Mark Mahowald) |
| KKen MartinSelf (as Dr Ken Martin) | Self (as Dr Ken Martin) |
| HHarvey MoldofskySelf (as Dr Harvey Moldofsky) | Self (as Dr Harvey Moldofsky) |
| JJoann MosbySelf - Michel Corke's Sister | Self - Michel Corke's Sister |
| BBob SmithersSelf - Carl's Father | Self - Carl's Father |
| LLiz SmithersCarl's Mother | Carl's Mother |
| PPeter TrippSelf (archive footage) | Self (archive footage) |
| GGraham TurralSelf (as Dr Graham Turral) | Self (as Dr Graham Turral) |
| WWilliam WadeSelf | Self |
| LLouis "Jolly" WestSelf (as Dr Louis 'Jolly' West) | Self (as Dr Louis 'Jolly' West) |