Picking up a distress call from the edge of the known universe, the Doctor and Sarah Jane find themselves on Zeta Minor where a geological team has run afoul of some strange goings on...
Tom Baker
Elisabeth Sladen
Frederick Jaeger
Ewen Solon
Prentis Hancock
Score: 7.8
Score: 7.2
Score: 7.5
Score: 7.3
Score: 8.1
Score: 6.2
Score: 7.9
Score: 7.6
