List of Out of the Unknown episodes Series 4 Series 4

| 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 |