5x19: A Whisper from Space
5x18: Memories from Eden
5x17: The Tse Tse Trap
5x16: The Desert's Edge
5x15: The Insect Alternative
5x13: Road to Happiness
5x12: Battle for the Acropolis
5x11: Still Waters
5x10: Icarus' Children
5x09: The Mind Machines
5x06: Trial of Denton Cooley
5x04: The Final Frontier (2)
5x03: One Small Step (1)
4x20: The Green Machine