Was the last episode within a multi-part story of the classic series to have its own separate title. Starting with the next adventure The Savages: Episode 1 (1966), multi-part stories would share a universal title. Separate titles for multi-part stories would not return until the new Doctor Who (2005) aired in the Spring of 2005.
This episode takes place in Tombstone, Arizona from October 25 to October 26, 1881.
Received an AI score of 30, the lowest score in the show's history.
This episode was watched by 5.7 million viewers on its original transmission.