The Valley of Life or Death
- Episode aired Nov 16, 2000
Aden Gillett
- Self - Narrator
- (voice)
Bertran Auvert
- Self
- (as Professor Bertran Auvert)
Michel Carael
- Self
- (as Dr. Michael Carael)
Richard Hayes
- Self
- (as Professor Richard Hayes)
Tom Lehner
- Self
- (as Professor Tom Lehner)
Gilbert Ogutu
- Self
- (as Dr. Gilbert Ogutu)
Bruce Patterson
- Self
- (as Dr. Bruce Patterson)
Frank Plummer
- Self
- (as Dr. Frank Plummer)
Priscilla Reining
- Self
- (as Dr Priscilla Reining)
Roger Short
- Self
- (as Professor Roger Short)