This episode was wiped by the BBC and no copy of it is known to exist.
This episode takes place in England in June 1866.
In the original script, Jamie and Victoria were held hostage on Skaro.
Despite the popular Daleks featuring on the show multiple times in the first few seasons, this is the first reappearance of their home planet, Skaro, since The Daleks more than 3 years prior.
This episode was watched by 6.8 million viewers on its original transmission.