List of Out of the Unknown episodes
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
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

Question: What were the titles of Episodes 401 and 408?
Answer: They were Taste of Evil and The Man in My Head, both broadcast as part of John Wiles season in 1971.