The Doctor finally discovers what the Monk is up to and must move fast to prevent his opponent from altering the course of history.
| Title | Checkmate |
|---|---|
| Genres | Drama Action & Adventure Sci-Fi & Fantasy |
| Release Date | 1965-07-24 |
| Episode Runtime | 00 Hours 25 Minutes |
| Season Number | 2 |
| Episode Number | 39 |
| Production Companies | BBC |
