| Name | First Aired | Runtime | Image | |
|---|---|---|---|---|
| S01E01 | Contact has Been Established |
July 18, 1953
BBC One
|
30 | |
| S01E02 | Persons Reported Missing |
July 25, 1953
BBC One
|
30 | |
| S01E03 | Very Special Knowledge |
August 1, 1953
BBC One
|
30 | |
| S01E04 | Believed to be Suffering |
August 8, 1953
BBC One
|
30 | |
| S01E05 | An Unidentified Species |
August 15, 1953
BBC One
|
30 | |
| S01E06 |
State of Emergency
series finale
|
August 22, 1953
BBC One
|
30 |
No artwork of this type.
No artwork of this type.
No artwork of this type.