England, the near future. A strange anti-matter creature arrives on Earth and attacks UNIT HQ. It seems to be specifically seeking the Doctor out - but why? With the Time Lords themselves unable to help, it seems the only person who can help the Doctor is himself - or selves...
| Creator | C. E. Webber |
|---|---|
| Actor | Sylvester McCoy, Sophie Aldred |
| Country | United Kingdom |
| Production | BBC |