26 Temporada
694 Episodio
Doctor Who - Season 13 Episode 3 Episodio 3
The Doctor and the Brigadier begin to realise who the Zygon imposters among them are while Sarah Jane discovers a secret tunnel to the underwater ship.
- Año: 1989
- País: United Kingdom
- Género: Drama, Action & Adventure, Sci-Fi & Fantasy
- Estudio: BBC One, BBC Television
- Palabra clave: time travel, space, alien
- Director: Verity Lambert, Sydney Newman, Donald Wilson, C. E. Webber
- Emitir: Sylvester McCoy, Sophie Aldred