| Episode,Title,Story,Adapted by,Director,Airdate,Exists? | |
| 401,“Taste of Evil”,John Wiles,n/a,Michael Ferguson,21 April 1971,No | |
| 402,“To Lay A Ghost”,Michael J. Bird,n/a,Ken Hannam,28 April 1971,Yes | |
| 403,“This Body Is Mine”,John Tully,n/a,Eric Hills,5 May 1971,Yes | |
| 404,“Deathday”,Angus Hall,Brian Hayles,Raymond Menmuir,12 May 1971,Yes | |
| 405,“The Sons and Daughters of Tomorrow”,Edward Boyd,n/a,Gerald Blake,19 May 1971,No | |
| 406,“Welcome Home”,Moris Farhi,n/a,Eric Hills,26 May 1971,Yes | |
| 407,“The Last Witness”,Martin Worth,n/a,Michael Ferguson,2 June 1971,No | |
| 408,“The Man in My Head”,John Wiles,n/a,Peter Cregeen,9 June 1971,Yes | |
| 409,“The Chopper”,Nigel Kneale,n/a,Peter Cregeen,16 June 1971,No | |
| 410,“The Uninvited”,Michael J. Bird,n/a,Eric Hills,23 June 1971,No (reconstruction exists) | |
| 411,“The Shattered Eye”,David T. Chantler,n/a,Peter Hammond,30 June 1971,No | |