|Story Code: F / Season 1||UK Airdate: 23 May to 13 Jun 1964||Doctor: William Hartnell|
|First airings by location||UK Repeats / Foreign Cable and Satellite||Previous Story / Next Story|
This story aired in the following countries. They are listed in chronological order according to known airdate. If no month is noted, the actual airdate is not confirmed, and is a close approximate. (Refer also to Selling Doctor Who for expanded airdates.)
|Rhodesia / Zimbabwe||Mar 66||b/w|
|Trinidad & Tobago||May 66||b/w|
|Hong Kong||Oct 66||b/w|
|Sierra Leone||Nov 67||b/w|
- A copy of episode four was found in Morocco.
- The serial screened in the United States from September 1985 as a NTSC conversion. Canada screened the serial in the 1990s. New Zealand and Sweden also later aired the serial in the early 2000s.