Galen, Virdon and Burke discover a mill built by an old man using technology from an advanced human city. They try to free him from the salt mine where he has been forced to work, but he is killed before they can learn the city's location. 
- A synopsis of this episode was published in the 'Simian Scrolls' fanzine issue #12. The original script is not publicly available.
- ↑ Timeline of the Planet of the Apes: The Definitive Chronology by Rich Handley