Matt Smith has several villains that are specific to his time as the Doctor. This blog is to highlight some of the best, or most terrifying villains during this time.
In series 7 episode 12 we're introduced to the "crimson horror" and the people responsible for it: Mr. Sweet and Winifred Gillyflower.
The Doctor and Clara end up in Yorkshire 1893 where they hear about a recruitment of people to live in a place called Sweetville.
Advertised as a safe haven for those who wish to survive a coming apocalypse, Mrs. Gillyflower, a somewhat innocent looking elderly woman, is only interested in the fittest, brightest and most beautiful applicants.
The Doctor ends up in the "reject pile". The rejects are dipped into a huge pool of the crimson stuff, which ends up being leech venom. We find out that Mrs. Gillyflower's "Silent partner" Mr. Sweet is a tiny red leech from the prehistoric era. Mr. Sweet has attached to Mrs. Gillyflower's chest, and in return for sustenance, he provides he with the venom she plans to use on the human race.
Mr. Sweet
The Doctor after being dipped in the Crimson Horror
Madam Vastra, Strax and Jenny all come to the aid of Clara and the Doctor, and together they were able to thwart Mrs. Gillyflower and Mr.Sweet. Mr.Sweet has a pretty gruesome demise at the hands of Mrs.Gillyflower's blind daughter, Ada.