The Third Secret
- Leto: 1964
- Država: United Kingdom
- Žanr: Misterija, Тriler, Drама
- Studio: Hubris Productions
- Ključna beseda: london, england, schizophrenia, film noir, psychologist, american abroad, killer child, tv host
- Direktor: Charles Crichton
- Igralska zasedba: Stephen Boyd, Jack Hawkins, Richard Attenborough, Diane Cilento, Pamela Franklin, Paul Rogers