Black Orchid was the fifth story to feature Peter Davison's Doctor and was notable for being a two-parter and the series first historical story since the Patrick Troughton days.
Now we Doctor Who fans can recite and quote all the facts and figures of any story, including this one, but what is so special about Black Orchid is that it is one of the very few stories that does not have to be watched with any appreiciation of science fiction, because apart from the TARDIS and the regular line up of characters there are no sci-fi elements at all, and that adds to the enjoyment enormously as it was quite a change of direction for the show at the time.
The whole story has a Sunday afternoon play of the week kind of feel, revolving around a type of Agatha Christie style murder mystery and is perfect for members of the casual viewing audience whom may not be interested in sci-fi but want a nice easy, pleasant hour of viewing.
It's ironic that Peter Davison himself does not like the story when this was the adventure where he finally shook off the shadow of Tom Baker and truly found his own interpretation of the part, he is very much in the minority as it is generally loved by almost everyone.
This was my favourite story in that crucial first year of Davison's and the fact that it was up against blockbusting Cybermen stories and more expensive shows and the first story of the fifth Doctor says a lot.
I have seen a provisional list of extras but as they have not been confirmed as such, I will leave their description to my fellow reviewers.
This is a huge thumbs up for the more quiet, gentle and character based stories of Doctor Who, to be enjoyed mainly for that reason, as there are not many of those in the original series.