The Enterprise is sent to a mining colony that is being terrorized by a mysterious monster, only to find that the situation is not that simple.
Episode rating
Cast of episode
- Captain James Tiberius 'Jim' Kirk
- Mister Spock
- Dr. McCoy
- Vanderberg
- Scott
- Appel
- Schmitter
- Engineer #1
- Guard
- Giotto
- Janus IV Miner
- Crewman
- Lieutenant Hadley
- Lt. Brent
- Kaplan
- Miner
- Horta
- Council Member
- Lieutenant Leslie
- Anthropoid Ape
- Council Member
- Crewman
- Crewman