Sezon 4
Bölümler
1 A Victim of Gravity 16 Eyl 1978 
2 Interplanet Janet 18 Kas 1978 
3 The Body Machine 6 Oca 1979 
4 Do the Circulation 10 Mar 1979 
5 The Energy Blues 27 Mar 1979 
6 Them Not-So-Dry Bones 5 May 1979 
7 Electricity, Electricity 19 May 1979 
8 Telegraph Line 30 Haz 1979 
9 The Greatest Show on Earth (aka The Weather Show) 7 Tem 1979